M30622ECTFP datasheet(32/184 Pages) MITSUBISHI

32 / 184 page

Mitsubishi microcomputers

M16C / 62T Group

SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER

Bus Settings

Table 1.11.2. Pin functions for each processor mode

I/O port

Processor mode

Memory expansion / microprocessor modes

(separate bus)

“01”, “10”

“00”

“11” (Note 2)

8 bits “H”

16 bits “L”

8 bits “H”

P00 to P07

P10 to P17

P20

P21 to P27

P30

P31 to P37

Port P40 to P43

P40 to P43

function select bit = 1

Port P40 to P43

P40 to P43

function select bit = 0

P50 to P53

P54

P55

P56

P57

P44 to P47

Data bus

I/O port

Data bus

I/O port

Data bus

I/O port

Address bus

I/O port

Address bus

I/O port

Address bus

A8/D7

I/O port

Address bus

I/O port

Address bus

I/O port

ALE

Single-chip

mode

multiplexed bus

for the entire space

Memory

expansion mode

(Note 1)

Address bus

/data bus

Address bus

/data bus

Address bus/

data bus (Note 3)

Address bus/

data bus (Note 3)

Address bus/

data bus (Note 3)

Address bus/

data bus (Note 3)

Either CS1 or CS2 is for multiplexed bus

and others are for separate bus

Multiplexed bus

space select bit

Data bus width

BYTE pin level

RDY

HOLD

HLDA

ALE

RDY

HOLD

HLDA

ALE

RDY

HOLD

HLDA

ALE

RDY

HOLD

HLDA

ALE

RDY

HOLD

HLDA

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”.)

Note 1: In M30623(80-pin package), set the data bus width to 8 bits by any of the following operations, to transfer the

microcomputer to memory expansion mode correctly.

• At reset, input “H” to the CNVSS (BYTE) pin to start the program in microprocessor mode. Then, set the

processor mode bit to memory expansion mode.

• At reset, input “L” to the CNVSS (BYTE) pin to start the program in single-chip mode, and input “H” to this pin.

Then, set the processor mode bit to memory expansion mode.

Note 2: If the entire space is of multiplexed bus in memory expansion mode, choose 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.

Note 3: Address bus when in separate bus mode.

Note 4: In M30623(80-pin package), P1, P44 to P47 have no corresponding external pin.

Note 5: M16C/62T group is not guaranteed to operate in memory expansion and microprocessor modes.

M30622ECTFP Folha de dados(PDF) 32 Page - Mitsubishi Electric Semiconductor

M30622ECTFP Folha de dados(HTML) 32 Page - Mitsubishi Electric Semiconductor

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

Folha de dados Download

Ligação URL