Pin Description - Renesas 7700 FAMILY User Manual

FLASH MEMORY VERSION
19.1 Parallel input/output mode

19.1.1 Pin description

Table 19.1.1 lists the pin description in the parallel I/O mode.
Table 19.1.1 Pin description in parallel I/O mode
Pin
Vcc, Vss
Power supply
CNVss
V input
PP
BYTE
External data bus width
select input
______
RESET
Reset input
X
Clock input
IN
X
Clock output
OUT
_
E
Enable output
AVcc
Analog supply input
AVss
V
Reference voltage input
REF
P0 –P0
Address input A
0 7
P1 –P1
Address input A
0 7
P2 –P2
Data input/output D
0 7
P3 –P3
Input port P3
0 3
P4 , P4
Input port P4
0 1
P4
2
P4 to P4
3 7
P5
Control signal input
0
P5
1
P5
2
P5
Input port P5
3
P5
Address input A
4
P5 to P5
Input port P5
5 7
P6 to P6
Input port P6
0 7
P7 to P7
Input port P7
0 7
P8 to P8
Input port P8
0 7
19–4
Input/Output
Name
Input
Input
Input
Input
Output
Output
Input
Input
to A
0 7
Input
to A
8 15
Input/Output
to D
0 7
Input
Input
Input
16
Input
Input
Input
7751 Group User's Manual
Supply 5 V ±10 % to Vcc pin and 0 V to Vss pin.
[Read-only mode]
Supply Vcc to Vcc +1.0 V.
[Read/write mode]
Supply 12 V ±5 %.
Connect to Vss pin.
Connect to Vss pin.
Connect a ceramic resonator or quartz-crystal oscillator
between X and X
IN OUT
clock, the clock source must be input to X
X pin must be left open.
OUT
Left open.
Connect to Vcc pin.
Connect to Vss pin.
Connect to Vss pin.
These are address A
0
These are address A
8
These are data D –D
0 7
Connect to Vss pin.
Connect to Vss pin.
Left open.
Connect to Vss pin.
___
This is WE signal input pin.
___
This is OE signal input pin.
___
This is CE signal input pin.
Connect to Vcc pin.
This is address A input pin.
16
Connect to Vss pin.
Connect to Vss pin.
Functions
pins. When using an external
–A input pins.
7
–A input pins.
15
input/output pins.
pin and
IN