Specifications

— 21 —
Pin No. Name In/Out Status Status Description
of OFF of ON
1~8 OI7~OI0 In/Out L L Data bus line for ICcard
9 A15 In L Pulse Address input
10,11 A01,A00 In L Pulse A1,A0 address input
12 CEB In L Pulse Decode signal for data access
13~16,18~21 IO0~IO7 In/Out L Pulse Data bus line
17 GND In L L GND terminal
22 CSB In H Pulse Chip select signal from CPU
23 MON Out L L Holding signal for LSI terminal (Card lock switch)
24 LSI In L L Card lock switch detection input
25 LSO Out H H Card lock switch detection output
26 PDN In H H Power down detection input
27 BLI In H H Battery detection V comp1 input
28 DEB Out H Pulse Chip selection signal for ROM(Character generator)
29 VIN In L H Power on signal input
30 VOT Out L H Power on signal output
31 OEI In H Pulse Read signal input
32 WEI In H Pulse Write signal input
33 BBC Out L Pulse Memory back-up battery scanning signal
34 CDE In L H IC card detection signal input
35 VOB Out H L ROM power switching signal (Operation program)
36 TXO Out H H Transmision data output
37 TXI In H H Reception data input
38 FOM In H H VDD terminal
39 VDD In H H VDD terminal
40 SWO Out L L Main switch control signal
41 BCN In H H BCON signal from CPU
42 MDP In H L MDP2 signal from CPU
43 OEO Out L Pulse Read signal for IC card
44 WEO Out L Pulse Write signal for IC card
10-6.Power supply chip IC pin descriptions (SC371015FU)
32,22 GND1,2 In L L GND terminal
1,19 VDD1,2 In H H Main battery positive terminal (+6V)
2 VO1 Out H H VDD output terminal (4.5V)
31 PDB In L H Power on switch signal from gate array
6 V COMP1 Out H H Battery detection signal (less than 4.6V---"L")
7 V COMP2 Out H H Battery detection signal (less than 4.4V---"L")
8 VSS Out L *-5V LCD drive power V REG
9 V1 Out L *3.25V LCD drive power V1
10 V2 Out L *1.95V LCD drive power V2
11 V3 Out L *-2.5V LCD drive power V3
12 V4 Out L *-3.75V LCD drive power V4
13~16 VD/V1~4 ** H ** Voltage drividing terminal for LCD drive power
17 C1N ** GND -5V Negative terminal for doubler capacitor C7
18 C2P ** 3V GND Positive terminal for doubler capacitor C8
20 C1P ** 3V -2.2V Positive terminal for doubler capacitor C7
21 C2N ** GND -2.2V Negative terminal for doubler capacitor C8
23 SUB CONT In L **
Pin No. Name In/Out Status Status Description
of OFF of ON
10-5.Gate array pin descriptions (µPD65005G-452-22)
card
Not used
Not used
(Not used)
(Not used)
Connected to GND