M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 23

• Manufacturer Part Number: M37702E6BFS
• Description: EPROM MCU/8BIT CMOS EMULATION CH
• Manufacturer: Renesas Electronics America

Specifications of M37702E6BFS

• Accessory Type: Emulator EPROM MCU
• For Use With/related Products: 7702
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Table 1.3.2 Pin description (2)
____
P0
A
P1
A
A
P2
A
A
P3
R/W,
BHE,
ALE,
_____
HLDA
0
8
15
16
23
__
–A
/D
: The 7703 Group does not have the P3
0
0
0
0
/D
/D
/D
–P0
–P1
–P2
–P3
Pin
8
7
–
15
0
7
–
7
7
7
3
I/O port P0
I/O port P1
I/O port P2
I/O port P3
Name
I/O
Output
I/O
I/O
I/O
Output
Input/Output
7702/7703 Group User’s Manual
3
/HLDA pin.
_____
[Single-chip mode]
Port P0 is an 8-bit CMOS I/O port. This port has an
I/O direction register and each pin can be programmed
for input or output.
[Memory expansion mode] [Microprocessor mode]
Low-order 8 bits (A
[Single-chip mode]
Port P1 is an 8-bit I/O port with the same function as
P0.
[Memory expansion mode] [Microprocessor mode]
[Single-chip mode]
Port P2 is an 8-bit I/O port with the same function as P0.
[Memory expansion mode] [Microprocessor mode]
Data (D
order 8 bits (A
with the time sharing system.
[Single-chip mode]
Port P3 is a 4-bit I/O port with the same function as P0.
[Memory expansion mode] [Microprocessor mode]
P3
signals.
“H” level)
Middle-order 8 bits (A
“L” level)
Data (D
order 8 bits (A
with the time sharing system.
The Read/Write signal indicates the data bus state.
The state is read while this signal is “H” level, and
write while this signal is “L” level.
“L” level is output when an odd-numbered address is
accessed.
This is used to obtain only the address from address
and data multiplex signals.
This is the signal to externally indicate the state when
the microcomputer is in Hold state.
“L” level is output during Hold state.
____
External bus width = 8 bits (When the BYTE pin is
R/W
BHE
ALE
_____
HLDA
External bus width = 16 bits (When the BYTE pin is
0
–P3
__
3
0
respectively output R/W, BHE, ALE, and HLDA
8
to D
to D
7
15
) input/output and output of the high-
16
) input/output and output of the middle-
8
–A
–A
23
0
15
–A
) of the address are performed
) of the address are performed
Functions
8
7
–A
) of the address are output.
DESCRIPTION
15
) of the address are output.
__ ____
1.3 Pin description
_____
1–7