M306H2MC-XXXFP Datasheet, PDF (25/210 Pages) Renesas Technology Corp – SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER with DATA ACQUISITION CONTROLLER

MITSUBISHI MICROCOMPUTERS
M306H2MC-XXXFP
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
with DATA ACQUISITION CONTROLLER
Table 2.4.2 Pin functions for processor mode
Processor mode ^Single-chip
mode
Multiplexed bus
space select bit
Memory expansion mode / Microprocessor modes
“01”
Either CS1 or CS2 is for
multiplexed bus and others
are for separate bus
“00”
(separate bus)
Data bus width
BYTE pin level
P00 to P07
I/O port
8 bits
“H”
Data bus
16 bits
“L”
Data bus
8 bits
“H”
Data bus
16 bits
“L”
Data bus
Memory
expansion mode
“11”(Note 1)
Multiplexed bus
for the entire
space
8 bits
“H”
I/O port
P10 to P17
I/O port
I/O port
Data bus
I/O port
Data bus
I/O port
P 20
P21 to P27
P 30
P31 to P37
I/O port
I/O port
I/O port
I/O port
Address bus
Address bus
/data bus (Note)
Address bus
Address bus
Address bus
Address bus
/data bus (Note) /data bus (Note)
Address bus Address bus
/data bus (Note)
Address bus
Address bus Address bus Address bus
Address bus
Address bus
Address bus
Address bus
Address bus
/data bus
Address bus
/data bus
A8/D7
I/O port
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
P 54
I/O port
I/O port
I/O port
I/O port
I/O port
I/O port
Address bus Address bus Address bus Address bus I/O port
CS (chip select) or programmable I/O port
(For details, refer to “Bus control”)
Outputs RD, WRL, WRH, and BCLK or RD, BHE, WR, and BCLK
(For details, refer to “Bus control”)
HLDA
HLDA
HLDA
HLDA
HLDA
P 55
I/O port
HOLD
HOLD
HOLD
HOLD
HOLD
P 56
I/O port
ALE
ALE
ALE
ALE
ALE
P 57
I/O port
RDY
RDY
RDY
RDY
RDY
Note 1: If the entire space is of multiplexed bus in memory expansion mode, chose an 8-bit width.
The processor operates using the separate bus after reset is revoked, so the entire space multiplexed bus cannot be
chosen in microprocessor mode.
The higher-order address becomes a port if the entire space multiplexed bus is chosen, so only 256 bytes can be used
in each chip select.
2: Address bus when in separate bus mode.
Rev. 1.0
24