6
ICD-B7
3-1. IC PIN DESCRIPTION
• IC703 µPD780308GC-A58-8EU (SYSTEM CONTROL)
Pin No. Pin Name I/O Pin Description
1 to 3 KEY1 to 3 I Key input
4XHOLD I Hold switch input
5AMPPOW O Power down control output for power amplifier IC (IC103).
6AVREFON O A/D reference voltage input
7XFMCE O Chip enable output for flash memory IC (IC701).
8VDD0 — Power supply pin
9AVREF — A/D reference voltage
10 XFMWE O Write enable signal output for flash memory IC (IC701).
11 XFMALE O ALE signal output
12 VSS1 — Ground
13 XFMR/B I Ready/Busy signal input from flash memory IC (IC701).
14 XFMCLE O CLE signal output for flash memory IC (IC701).
15, 16 NC O Not used. (Open)
17 XFMRE O Read enable signal output for flash memory IC (IC701).
18 XFMSE O SE signal output for flash memory IC (IC701).
19 XFMWP O WP signal output for flash memory IC (IC701).
20 CLKOUT O Not used. (Open)
21 BEEP O Beep signal output (2.4 kHz)
22 LIGHT O LCD back light control output
23 to 26 COM0 to 3 O LCD common signal output
27 BIAS O Connect to VDD. (LCD bias)
28 to 30 VLC0 to 2 — LCD drive power supply pin
31 VSS0 — Ground
32 to 61 S0 to 29 O LCD segment signal output
62 MGHIGH I Mic gain mode input (High: high mode)
63 MGTEST O Mic gain mode test output
64 XTEST I Test pin
65 DSPPOW O Digital signal processor registor control I/F enable signal output
66 LEDREC O OPR (REC) LED (D701: red) ON/OFF output
67 LEDPB O OPR (PLAY) LED (D701: green) ON/OFF output
68 RTCCE O Real time clock chip enable signal output
69 XDSPIFRQ O I/F request signal output for DSP IC (IC101).
70 DSPIFRW O I/F data read/write signal output for DSP IC (IC101).
71 XDSPRST O Reset signal output for A/D, D/A converter, DSP IC (IC101).
72 SI0 I I/F data signal input for DSP IC (IC101).
73 SO0 O I/F data signal output for DSP IC (IC101).
74 SCK0 O I/F signal clock output for DSP IC (IC101).
75 RTCDI I Real time clock data input
76 RTCDO O Real time clock data and digital signal processor registor control data output
77 RTCCLK O Real time clock I/F data and digital signal processor registor control clock output
78 IC — Ground
79 X2 O System clock output (5 MHz)
80 X1 — System clock input (5 MHz)
81 VDD1 — Power supply pin
82 XT1 — Sub clock input (32.768 kHz)
83 XT2 — Not used. (Open)
84 XRESET I Reset signal input
85 NC — Not used. (Open)
SECTION 3
DIAGRAMS
