6V7 Datasheet, PDF (28/298 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER

M306V7MG/MH/MJ/MJA-XXXFP, M306V7FG/FH/FJ/FJAFP
Table 2.4.2 Pin functions for each processor mode
Processor mode
Single-chip
mode
Memory expansion mode/microprocessor modes
Data bus width
BYTE pin level
8 bits
= “H”
16 bits
= “L”
P00 to P07
I/O port
Data bus
Data bus
P10 to P17
P 20
P21 to P27
P 30
I/O port
I/O port
I/O port
I/O port
I/O port
Address bus
Address bus
Address bus
Data bus
Address bus
Address bus
Address bus
P31 to P37
I/O port
Address bus
Address bus
P40 to P43
Port P40 to P43
function select bit = 1
P40 to P43
Port P40 to P43
function select bit = 0
P44 to P47
I/O port
I/O port
I/O port
P50 to P53
I/O port
P54
I/O port
P 55
I/O port
P 56
I/O port
I/O port
I/O port
Address bus
Address bus
CS (chip select) or programmable I/O port
(For details, refer to “2.4.4 Bus control”)
Outputs RD, WRL, WRH, and BCLK or RD, BHE, WR, and BCLK
(For details, refer to “2.4.4 Bus control”)
HLDA
HLDA
HOLD
ALE
HOLD
ALE
P 57
I/O port
RDY
RDY
Rev.1.00 May 18, 2004 page 28 of 296