M37207M8-059SP datasheet(106/121 Pages) MITSUBISHI

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106

MITSUBISHI MICROCOMPUTERS

M37207MF-XXXSP/FP, M37207M8-XXXSP

M37207EFSP/FP

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER for VOLTAGE SYNTHESIZER

and ON-SCREEN DISPLAY CONTROLLER

Serial I/O Mode Register

I2C Clock Control Register

Address 00DD16

Address 00DE16

b7 b6 b5 b4 b3 b2 b1 b0

I2C clock control register (S2 : address 00DD16)

I2C Clock Control Register

SCL frequency control bits

(CCR0 to CCR4)

SCL mode

specification bit

(FAST MODE)

0 : Standard clock mode

1 : High-speed clock mode

Standard clock

mode

Name

Functions

After reset RW

ACK bit

(ACK BIT)

ACK clock bit

(ACK)

0 : ACK is returned.

1 : ACK is not returned.

0 : No ACK clock

1 : ACK clock

High speed

clock mode

Setup disabled Setup disabled

00 to 02

Setup disabled

333

Setup disabled

250

100

400 (See note)

83.3

166

500/CCR value

1000/CCR value

17.2

34.5

16.6

33.3

16.1

32.3

(at

φ = 4 MHz, unit : kHz)

Note: At 400 kHz in the high-speed clock mode, the duty is as below .

“0” period : “1” period = 3 : 2

In the other cases, the duty is as below.

“0” period : “1” period = 1 : 1

Setup value of

CCR4–CCR0

b7 b6 b5 b4 b3 b2 b1 b0

Serial I/O mode register (SM) [Address 00DE16]

Name

Functions

After reset RW

Serial I/O Mode Register

0, 1 Internal synchronous

clock selection bits

(SM0, SM1)

(See note 1)

b1 b0

0 0: f(XIN)/4 or f(XCIN)/4

0 1: f(XIN)/16 or f(XCIN)/16

1 0: f(XIN)/32 or f(XCIN)/32

1 1: f(XIN)/64 or f(XCIN)/64

Synchronous clock

selection bit (SM2)

3, 7 Ports P40, P41

function selection

bits (SM3, SM7)

P40/SOUT2/

SDA3/XCIN

P40

SOUT2

SDA3

0: External clock

1: Internal clock

4, 6 Ports P42, P43

function selection bits

(SM4, SM6)

Transfer direction

selection bit (SM5)

0: LSB first

1: MSB first

0R W

P41/SCLK2/

SCL3/XCOUT

P41

SCLK2

SCL3

P42/SIN2/

SDA2/AD8

P42

SDA2

P42

SDA2

0R W

P43/SRDY2/

SCL2/AD7

P43

SRDY2

SDA2

Notes 1: Either f(XIN) or f(XCIN) is selected by bit 7 of the CPU

mode register.

2: When using ports P4 0–P43 as serial I/O pins, set bit 1 of

the serial control register to “1.”

(See note 2)

M37207M8-059SP Datasheet(PDF) 106 Page - Mitsubishi Electric Semiconductor

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