HD4043312 查看數據表（PDF） - Hitachi -> Renesas Electronics

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产品描述 (功能)

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HD4043312

4-bit HMCS400-Series microcomputer

Hitachi -> Renesas Electronics 

Table 10

SMR

Bit 3

1

Serial Interface Operating Modes

PMRA

Bit 1

0

1

Bit 0

0

1

0

1

Operating Mode

Continuous clock output mode

Transmit mode

Receive mode

Transmit/receive mode

HD404339 Series

STS wait state

(Octal counter = 000,

transmit clock disabled)

MCU reset

SMR write

STS instruction

SMR write (IFS ← 1)

Transmit clock wait state

(Octal counter = 000)

Transmit clock

8 transmit clocks or STS instruction (IFS ← 1)

External clock mode

Transfer state

(Octal counter = 000)

SMR write

STS wait state

(Octal counter = 000,

transmit clock disabled)

MCU reset

Continuous clock output state

(PMRA 0, 1 = 00)

SMR write

STS instruction

Transmit clock

Transmit clock wait state

(Octal counter = 000)

Transmit clock

STS instruction (IFS ← 1)

8 transmit clocks or

SMR write (IFS← 1)

Transfer state

(Octal counter = 000)

Internal clock mode

Figure 39 Serial Interface State Transitions

51

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