nju3502 ? # terminal description 1 no. symbol input/output f u n c t i o n 22 23 1 2 pc0 pc1 pc2 pc3 input/output input/output input/output input/output 4-bit input / output portc. selects a terminal circuit for each port from follows by the mask option. x c-mos input terminal with pull-up resistance(ia) x c-mos input terminal(ic) x c-mos output terminal(ob) 3 4 pd0 pd1 input/output input/output 2-bit input / output portd. selects a terminal circuit for each port from follows by the mask option. x c-mos schmitt trigger input terminal with pull-up resistance(ib) x c-mos schmitt trigger input terminal(id) x c-mos output terminal(ob) when the ports are selected as the input terminal, pd0 operates also as restart signal input terminal to return from standby mode, and pd1 operates also as the edge detector terminal. 5 6 7 8 pa0 pa1 pa2 pa3 input/output input/output input/output input/output 4-bit input / output porta. selects a terminal circuit for each port from follows by the mask option. x c-mos input terminal with pull-up resistance(ia) x c-mos input terminal(ic) x c-mos output terminal(ob) 9 test input maker testing terminal with pull-down resistance the terminal is recommended to connect to gnd. 10 11 osc1 osc2 input output internal oscillator terminals. connects a device selected from the ceramic or the crystal resonator, or the resistor, to these terminals for the internal oscillator. in the external clock operation, osc1 is the external clock input terminal and osc2 is normally open terminal. 12 v ss C power source (0v) 13 reset input reset terminal. when the low level input-signal, the system is initialized. 14 exti / pe0 input 1-bit input porte. selects a function of either 1) or 2) for porte by the mask option. 1) external interrupt input terminal with pull-up resistance. :exti 2) 1-bit input terminals as porte selects a terminal circuit for each port from follows by the mask option. x c-mos schmitt trigger input terminal with pull-up resistance(ib) x c-mos schmitt trigger input terminal(id) note ) input/output : input or output is selected by the mask option. inout : input or output is changed by the program.
nju3502 ? # terminal description 2 no. symbol input/output f u n c t i o n 15 16 sdo / pf0 sdi(o) / pf1 sdo :output pf0 :output sdi(o) :inout pf1 : input/output 2-bit input / output portf. selects a function of either 1) or 2) for portf by the mask option. 1) serial interface function serial data output terminal : sdo serial data input-output terminal with pull-up resistance : sdi(o) 2) 2-bit input / output terminals as portf. selects a terminal circuit for each port from follows by the mask option. x c-mos input terminal with pull-up resistance (ia):pf1 x c-mos input terminal(ic):pf1 x c-mos output terminal(ob):pf0,pf1 17 sck / ckout sck :inout ckout : output selects a function of either 1) or 2) by the mask option. 1) serial clock input or output terminal with pull-up resistance. :sck 2) clock divided by pre-scaler output terminal with pull-up resistance. :ckout selects the dividing times of the clock in the pre-scaler by the mask option. 18 19 20 21 pb0 pb1 pb2 pb3 inout inout inout inout 4-bit programmable input / output portb these 4-bit terminals direction can be changed by the program as 4-input or 4-output. use of pull-up resistance is in accordance with the mask option. x as input : c-mos input terminals x as output: nch-fet open-drain output terminal 24 v dd C power source (2.4v to 5.5v) note ) input/output : input or output is selected by the mask option. inout : input or output is changed by the program.
n j u 35 02 m e m o [caution] the specifications on this databook are only given for information , without any guarantee as regards either mistakes or omissions. the application circuits in this databook are described only to show representative usages of the product and not intended for the guarantee or permission of any right including the industrial rights.
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