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MITSUBISHI
M56710FP
F2F MAGNETIC STRIPE ENCORDING CARD READER
DESCRIPTION
The M56710FP is a semiconductor integrated circuit of BiCMOS structure having an F2F demodulator function for magnetic card reader.
PIN CONFIGURATION (TOP VIEW)
Read control input
LDI 1 NC
20 19 18 17
VCC1 Power supply VCC2 Power supply CX1 Oscillation capacitor CX2 Oscillation capacitor
FEATURES
q Low current dissipation (0.7mA when on standby as a standard) q Provided with glance-over selection input (4, 8, and 16 bits) q Provided with output polarity ("L" active or "H" active) switching input q Miniature mini-mold package q Wide operating temperature range Ta = -20 - 75C
2
F2F output F2F 3 Noise filter PKO Differentiator input
4
M56710FP
PKI 5
16 IB1 Ignore bit 1 15 IB2 Ignore bit 2 14 INV Invert input 13 CLS Card travelling 12 RDT Read data output 11 RCP Read clock output
signal output
Amplifier output AMP 6 Amplifier (-) input HD2 7
APPLICATION
Magnetic card reader
Amplifier (+) input HD1 8 Standard voltage VRF output Grounding GND
9 10
FUNCTION
Data signal which is read from magnetic card via magnetic head is input from HD2 and HD1 pins, and converted into F2F pattern signal by analog processing in amplifier OP1, differentiator OP2, sensitivity setting circuit and waveform shaping circuit. If F2F signal is input, the logic section glances over the prescribed number of bits set by IB1 and IB2 input before performing digital processing, and then outputs card reading signal CLS, read clock signal RCP, and read data signal RDT. INV turning to "L" switches each output of CLS, RCP and RDT from "L" active to "H" active. * STANDARD BITS: Let the number of glance-over bits set by IB1 and IB2 be M. Let the Mth FC (flux change) through M+1st FC after LDI input is turned from "L" to "H" be a standard bit with a time width of TB0. I/O is discriminated from the next bit to this standard bit as a data bit.
Outline 20P2N-A
NC: no connection
* I/O discrimination Let the data bit time width of a data bit be TBn, and if there is one next FC between the FC at the end of that bit (i.e. the beginning of the next bit) to 5/7TBn, let the next bit (Bn+1) be data "1", and, if there is no FC, be data "0". * Output signal time width When letting the oscillation cycle of oscillation circuit be TOSC, * RCP output pulse width TOW * * * * * * * * * * * * * * * * * * * * * * * about 16TOSC * RCP delay time to RDT * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * about 8TOSC
BLOCK DIAGRAM
Amplifier Differentiator Noise filter output input PKO AMP PKI 5 6 4
F2F output F2F 3
Amplifier (-) input HD2 7 Amplifier (+) input HD1 8 OP1 OP2
Sensitivity setting
Waveform shaping
20 VCC1 19 VCC2
Power supply Power supply
Reference voltage output VRF 9
Reference voltage circuit
14 INV
Invert input
Read control input LDI Ignore bit 2 IB2
1
15
13 CLS
Card travelling signal output
Control circuit
12 RDT
Read data output
Ignore bit 1 IB1 16
11 RCP
Read clock output
5TOSC 1/5 Oscillation capacitor CX2 17 Oscillation capacitor CX1 18
Oscillation circuit
11 bit downcounter
10 GND
TOSC 1/7 7TOSC 11 bit upcounter
MITSUBISHI
M56710FP
F2F MAGNETIC STRIPE ENCORDING CARD READER
I/O CIRCUIT 1
LDI, IB1, IB2 input circuit
2
INV input circuit
VCC2 LDI IB1 IB2
VCC2
INV
GND
GND
3
CLS, RDT, RCP output circuit
VCC2 CLS RDT RCP GND
PIN FUNCTION DESCRIPTION
Pin No.
1 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Pin name LDI F2F PKO PKI AMP HD2 HD1 VRF GND RCP RDT CLS INV IB2 IB1 CX2 CX1 VCC2 VCC1
Name Read control input F2F output Noise filter Differentiator input Amplifier output Amplifier (-) input Amplifier (+) input Reference voltage output Grounding Read clock output Read data output Card travelling signal output Invert input Ignore bit 2 Ignore bit 1 Oscillation capacitor Oscillation capacitor Power supply Power supply
Function Schmidt trigger input. At "L", reset the internal digital circuit. At "H", F2F modulation is possible.
F2F signal output that has amplified, differentiated and further waveform-shaped the magnetic head signal.
Connect noise removing capacitor CNF between PKI and PKO. Refer to PKO and AMP. Connect resistor RPK and capacitor CPK between AMP and PKI. Connect magnetic head between HD1 and HD2. Connect magnetic head between HD1 and HD2. Reference voltage output of Vcc 1/2 Clock pulse output after F2F modulation Data output after F2F modulation Signal output indicating that card is travelling CLS, RDT and RCP output becomes "L" active at "H" (OPEN), and "H" active at "L". Glance-over bit setting pin Glance-over bit setting pin Connect capacitor COSC between CX1 and CX2 to set oscillation frequency. Connect capacitor COSC between CX1 and CX2 to set oscillation frequency. Digital circuit section power supply pin. Supply voltage is Vcc. Analog circuit section power supply pin. Supply voltage is Vcc (same voltage as Vcc2).
MITSUBISHI
M56710FP
F2F MAGNETIC STRIPE ENCORDING CARD READER
GLANCE-OVER BIT SETTING AND TIMING BY IB1 AND IB2
IB2 input L L H H IB1 input L H L H Number of glance-over bits 4 8 16 -- Description
* Internal digital circuit is reset with LDI input at "L". * LDI input may be at "H" at all times. * CLS output turns to "L" after counting the flux change
FC (change in the status of F2F) of the number of glance-over bits, and returns to "H" when BIC (bit interval counter) has fully counted. (At "L" active). --
* IB2, IB1: "L", "L"
TBO : Reference bit x F2F 1 2 3 4
LDI
BIC full count
CLS About 14300 TOSC
OPERATING TIMING DIAGRAM
IB2, IB1 : "L", "L" INV : "H" HD2 - HD1 F2F LDI (5/7) Bit 1/0 discrimination signal
TB0 Reference bit
TBn TBn+ 5/7TBn
CLS RCP RDT HD2 - HD1 0 0 0 0 1 0 1 1 0
RDT data is output 1 bit behind F2F data.
F2F LDI (5/7)
CLS RCP RDT 0 0 0 0 1 0 0 0 0 0 0 1 0 1 1 0 0
MITSUBISHI
M56710FP
F2F MAGNETIC STRIPE ENCORDING CARD READER
ABSOLUTE MAXIMUM RATINGS (Ta = -20 - 75C, unless otherwise noted)
Symbol VCC VI VI IO VID Topr Tstg Parameter Supply voltage Input voltage Input voltage Output voltage Differential input voltage Operating temperature Storage temperature Conditions VCC1, VCC2 LDI, IB1, IB2, INV HD1, HD2 CLS, RDT, RCP Between HD2 and HD1 pins Ratings -0.3 - +6.5 -0.3 - VCC+0.3 -0.3 - VCC+0.3 -10 - +10 -1.2 - +1.2 -20 - 75 -55 - 125 Unit V V V mA V C C
Note 1: Voltage is based on GND pin of the circuit (0V), unless otherwise noted. 2: Direction of the current flowing into the circuit is represented by "positive" (without code) and that flowing out of the circuit by "negative" (- code).
RECOMMENDED OPERATING CONDITION (Ta = -20 - 75C, unless otherwise noted)
Symbol VCC VI VIH VIL IOH IOL VIN fIN fOSC COSC COSC RPK CPK CNF RPF - CVC CVR Parameter Supply voltage Input voltage "H" input voltage "L" input voltage "H" output current "L" output current Differential input voltage Input frequency Oscillation frequency External capacitor External capacitor External resistor External capacitor External capacitor External resistor - External capacitor External capacitor VCC1, VCC2 LDI IB1, IB2, INV IB1, IB2, INV CLS, RDT, RCP CLS, RDT, RCP HD2-HD1 HD2-HD1 CX1, CX2 CX1, CX2 AMP PKI PKI, PKO PKI, F2F VCC1, VCC2 VRF Test conditions
VCC1 and VCC2 shall have the identical voltage.
fOSC = 1/TOSC fOSC 1/COSC
Reference value when corresponding to 210BPI Reference value when corresponding to 210BPI Reference value when corresponding to 210BPI
Min. 4.0 0 0.8VCC 0 -0.5 0 3 0.3 0.2 25
Limits Typ. 5
Reference value Reference value Reference value Reference value
0.8
33 470 0.033 220 4.7 - 0.1 1
Unit Max. V 5.5 V VCC V VCC V 0.2VCC mA 0 mA 5 mVp-p 80 kHz 15 MHz 2 pF 100 pF F pF M F F
2
MITSUBISHI
M56710FP
F2F MAGNETIC STRIPE ENCORDING CARD READER
ELECTRICAL CHARACTERISTICS (Ta = -20 - 75C and VCC = 5V, unless otherwise noted)
Symbol VTH VOL VOH IIL IIL IIH IIT+ VREF GV11 GV21 RIN1 VOPP1 IIL2 IIH2 VTH+2 VTH-2 VTHD2 VPKO VOL3 VOH3 VTH+4 VTH-4 VHY4 ICCW ICCR fOSC TOW TOD TNW Threshold voltage "L" output voltage "H" output voltage "L" input current "L" input current "H" input current Positive threshold current Reference voltage Voltage gain 1 Voltage gain 2 Input resistance Maximum output voltage "L" sensitivity current "H" sensitivity current Positive threshold voltage Negative threshold voltage Threshold differential voltage Pin voltage range "L" output voltage "H" output voltage Positive threshold voltage Negative threshold voltage Hysterisis width Standby circuit current Operating circuit current Oscillation frequency Output pulse width Intra-output delay time Input noise width Parameter IB1, IB2, INV CLS, RDT, RCP CLS, RDT, RCP LDI, IB1, IB2 INV LDI, IB1, IB2, INV INV VRF OP1 OP1 OP1 OP1 PKI - F2F PKI - F2F PKI - F2F PKI - F2F PKI - F2F PKO F2F F2F LDI LDI LDI VCC1, VCC2 VCC1, VCC2 RCP RCP RDT, RCP INV Test conditions VCC = 4 - 5.5V IOL = 10A VCC = 4V IOL = 5mA IOH = -10A VCC = 4V IOH = -0.5mA VCC = 5.5V, VI = 0V VCC = 5.5V, VI = 0V VCC = 5.5V, VI = 5.5V VCC = 5.5V, VI = VTH VIN = 0mVp-p fIN = 1kHz VIN = 80mVp-p sine wave fIN = 15kHz VIN = 80mVp-p sine wave fIN = 1kHz VIN = 80mVp-p sine wave fIN = 1kHz sine wave THD AMP = 5% VM, F2F < 0.5V VM, F2F > 4.5V On the VRF basis On the VRF basis (VTH+2) - VTH-2 On the VRF basis IPKI = 1mA - +1mA VPKI = 0V, IF2F = 0.5mA VPKI = 5V, IF2F = -0.5mA Test circuit - 2 2 2 2 2 2 2 2 1 3 3 3 3 4 4 5 5 - 4 5 5 6 6 - 1 1 1 7 7 7 Min. 0.3VCC - - 3.8 3.2 -10 -80 -10 -250 2.3 18 18 7 2 - 0.3 0.2 -0.7 -0.15 -1.2 - 4.5 2.5 1.5 0.5 - - 0.75 15 7 0.5 Limits Typ. Max. - 0.7VCC 0.2 - 0.4 - - - - - +10 - -10 - +10 - -50 - 2.7 2.5 20 20 10 - - - 0.45 -0.45 - - - - - - - 0.7 1.9 - 16 8 - 24 24 14 - -0.3 - 0.7 -0.2 0.15 1.2 0.5 - 3.5 2.7 1.5 1.0 2.4 1.5 17 9 - Unit V V V V V A mA A A V Double Double k VP-P A A V V V V V V V V V mA mA MHz s s s
(VTH+4) - (VTH-4) VIN = 0mVp-p fIN = 8.2kHz VIN = 68mVp-p sine wave fOSC = 1MHz COSC = 33pF fOSC = 1MHz fOSC = 1MHz
Note: Min. and max. limits do not represent absolute values. : Typ. limits represent standard values when Ta = 25C and VCC = 5V.
MITSUBISHI
M56710FP
F2F MAGNETIC STRIPE ENCORDING CARD READER
TEST CIRCUIT: On the following drawing, COSC = 33pF, RPK=470, CPK = 0.033F, CNF = 470pF, CVR = 1F 1. Testing of VREF, ICCW, ICCR, fOSC
VCC A LDI VCC1 VCC2 F2F CNF RPK PKI CPK AMP HD2 HD1 VIN, fIN VREF V VRF GND IB1 IB2 INV CLS RDT RCP fosc Oscilloscope CVR PKI AMP HD2 HD1 VRF GND IB1 IB2 INV CLS RDT RCP VOL VOH V IOL IOH A VI PKO CX1 COSC CX2 PKO CX2 F2F ICCW ICCR LDI VCC1 VCC2 CX1 COSC IIH IIL IIT+ VCC
2. Testing of VOL, VOH, IIL, IIH, IIT+
RCP TOW fOSC =
16 TOW
Note: Short the IB1 and IB2 to the GND when those pins are not used for testing.
3. Testing of GV11, GV21, RIN1, VOPP1
VCC
4. Testing of IIH2, IIL2, VPKO
VCC
LDI
VCC1 VCC2
LDI
VCC1 VCC2
THD meter (ON at VOPP1) RPK
F2F CNF PKO PKI CPK AMP HD2
CX1 COSC CX2 IB1 IB2 INV CLS RDT RCP VM.F2F VM.PKO V IPKI IIH2 IIL2
F2F PKO PKI AMP HD2 HD1 CVR VRF GND
CX1 COSC CX2 IB1 IB2 INV CLS RDT RCP
VM.AMP V VOPP1 10k
(OFF at RIN) 10k
CVR
HD1 VRF GND
VIN, IIH
GV11 = RIN1 =
VM.AMP VIN 2VM.AMP x 10(k) GV11*VIN - VM.AMP
IIL2 is PKI input current providing VM.F2F < 0.5V. IIH2 is PKI input current providing VM.F2F > 4.5V. VPKO = VM.PKO - VREF
MITSUBISHI
M56710FP
F2F MAGNETIC STRIPE ENCORDING CARD READER
5. Testing of VTH+2, VTH-2, VOL3, VOH3
VCC
6. Testing of VTH+4, VTH-4
VCC
LDI (ON at VOL3 and VOH3) F2F 5k PKO PKI IF2F V VM.F2F VOL3 VOH3 VPKI CVR GND AMP 5k HD2 HD1 VRF
VCC1 VCC2 CX1 COSC CX2 IB1 IB2 INV CLS RDT RCP VLDI
LDI
VCC1 VCC2
F2F PKO PKI AMP HD2 HD1 VRF GND
CX1 CX2 IB1 IB2 INV CLS RDT V RCP VM.CLS
VCC VPKI 0V "H" VM.F2F "L" VPKI+ VPKI-
VTH+2 = VREF-VPKIVTH-2 = VREF-VPKI+
VCC VLDI 0V "H" VM.CLS "L"
VTH+4 VTH-4
7. Testing of TOW, TOD, TNW
RCP VCC RDD TOD LDI VCC1 VCC2 Logic pattern generator F2F PKO 5k PKI AMP HD2 HD1 VRF CVR GND RCP (ON at TNW) IB1 IB2 INV CLS RDT Oscilloscope CX1 CX2 CLK CLK fosc duty 50% VCC INV 0V RCP TNW TOD TOW
Noise input TNW, a negative noise put into INV input, is the maximum time interval not considered INV input.
MITSUBISHI
M56710FP
F2F MAGNETIC STRIPE ENCORDING CARD READER
APPLICATION EXAMPLE
When setting the glance-over bit to 16 bits to let it be "L" active output
5V
1 LDI 2 3 F2F RPF CNF 5 PKI CPK RPK 6 AMP 7 HD2 8 HD1 9 VRF CVR 10 GND 4 PKO
VCC1 20 VCC2 19 CVC CX1 18 COSC CX2 17 IB1 16
IB2 15 INV 14 CLS 13 RDT 12 RCP 11

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