Hardware manual

Rev. 3.0, 09/98, page 8 of 361
1.3.2 Pin Functions
(1) Pin Assignments in Each Operating Mode: Table 1.2 lists the assignments of the pins of
the FP-80A, CP-84, and CG-84 packages in each operating mode.
Table 1.2 Pin Assignments in Each Operating Mode
Pin No. Expanded Modes Single-Chip Mode
CP-84
CG-84 FP-80A Mode 1 Mode 2 Mode 3
PROM
Mode
171D
6
D
6
P3
6
EO
6
2  V
SS
V
SS
V
SS
V
SS
372D
7
D
7
P3
7
EO
7
473V
SS
V
SS
V
SS
V
SS
574P8
0
P8
0
P8
0
NC
675P8
1
P8
1
P8
1
NC
776P8
2
P8
2
P8
2
NC
877P8
3
P8
3
P8
3
NC
978P8
4
/ TxD
1
/ IRQ
3
P8
4
/ TxD
1
/ IRQ
3
P8
4
/ TxD
1
/ IRQ
3
NC
10 79 P8
5
/ RxD
1
/ IRQ
4
P8
5
/ RxD
1
/ IRQ
4
P8
5
/ RxD
1
/ IRQ
4
NC
11 80 P8
6
/ SCK
1
/ IRQ
5
P8
6
/ SCK
1
/ IRQ
5
P8
6
/ SCK
1
/ IRQ
5
NC
12 1 RES RES RES V
PP
13 2 XTAL XTAL XTAL NC
14 3 EXTAL EXTAL EXTAL NC
15 4 MD
1
MD
1
MD
1
V
SS
16 5 MD
0
MD
0
MD
0
V
SS
17 6 NMI NMI NMI EA
9
18 7 STBY STBY STBY V
SS
19 8 V
CC
V
CC
V
CC
V
CC
20 9 P5
2
/ SCK
0
P5
2
/ SCK
0
P5
2
/ SCK
0
NC
21 10 P5
1
/ RxD
0
P5
1
/ RxD
0
P5
1
/ RxD
0
NC
22 11 P5
0
/ TxD
0
P5
0
/ TxD
0
P5
0
/ TxD
0
NC
23 12 V
SS
V
SS
V
SS
V
SS
24  V
SS
V
SS
V
SS
V
SS
25 13 WAIT WAIT P9
7
NC
Note: Pins marked NC should be left unconnected.
For details on PROM mode, refer to 14.2, “PROM Mode.”