M30622MA-XXXFP RENESAS [Renesas Technology Corp], M30622MA-XXXFP Datasheet - Page 48

• Manufacturer Part Number: M30622MA-XXXFP
• Description: 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY
• Manufacturer: RENESAS [Renesas Technology Corp]

Bus Settings
Table 1.11.2. Pin functions for each processor mode
Note 1: If the entire space is of multiplexed bus in memory expansion mode, choose an 8-bit width.
Note 2: Address bus when in separate bus mode.
function select bit = 1
function select bit = 0
Processor mode
Multiplexed bus
space select bit
Port P4
Port P4
Data bus width
BYTE pin level
P1
P2
P3
P3
P4
P4
P5
P5
P5
P2
P4
P5
P5
P0
0
1
0
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.
0
1
0
0
4
0
4
5
6
7
0
to P2
to P3
to P4
to P4
to P5
to P1
to P4
to P0
0
0
to P4
to P4
7
7
7
3
3
7
3
7
3
3
Single-chip
I/O port
I/O port
I/O port
I/O port
I/O port
I/O port
I/O port
I/O port
I/O port
I/O port
I/O port
I/O port
I/O port
I/O port
mode
Address bus
Address bus
/data bus
Address bus
I/O port
/data bus
CS (chip select) or programmable I/O port
Outputs RD, WRL, WRH, and BCLK or RD, BHE, WR, and BCLK
ALE
RDY
Data bus
Address bus
I/O port
Address bus
HLDA
HOLD
Either CS1 or CS2 is for
multiplexed bus and others
are for separate bus
Memory expansion mode/microprocessor modes
8 bits
“H”
(Note 2)
(For details, refer to “Bus control”)
(Note 2)
(For details, refer to “Bus control”)
“01”, “10”
Address bus
/data bus
Address bus
/data bus
Data bus
Address bus
Data bus
Address bus
I/O port
Address bus
ALE
RDY
HLDA
HOLD
16 bits
“L”
(Note 2)
(Note 2)
I/O port
Address bus
Address bus
Address bus
Address bus
/O port
Address bus
HLDA
HOLD
ALE
RDY
Data bus
8 bits
SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
“H”
(separate bus)
“00”
Data bus
Address bus
Address bus
Address bus
Address bus
I/O port
Address bus
HLDA
HOLD
ALE
RDY
Data bus
16 bits
“L”
Mitsubishi microcomputers
M16C / 62 Group
expansion mode
I/O port
Address bus
/data bus
Address bus
/data bus
A
I/O port
I/O port
I/O port
ALE
RDY
“11” (Note 1)
HLDA
HOLD
I/O port
multiplexed
8
bus for the
/D
Memory
space
entire
8 bit
7
“H”
33