HD404364 查看數據表（PDF） - Renesas Electronics

零件编号

产品描述 (功能)

生产厂家

HD404364

4-bit HMCS400-Series microcomputer

Renesas Electronics 

Transfer completion

(IFS ← 1)

Interrupts inhibited

IFS ← 0

SMR write

HD404369 Series

Yes

IFS = 1

Transmit clock

error processing

No

Normal

termination

Transmit clock error detection flowchart

State

Transmit clock

wait state

SCK pin (input)

1

SMR write

Transfer state

Transmit clock wait state

Transfer state

Noise

2

3

4

5

6

7

8

Transfer state has been

entered by the transmit clock

error. When SMR is written,

IFS is set.

IFS

Flag set because octal

counter reaches 000

Flag reset at

transfer completion

Transmit clock error detection procedure

Figure 61 Transmit Clock Error Detection

Registers for Serial Interface

The serial interface operation is selected, and serial data is read and written by the following registers.

 Serial Mode Register (SMR: $005)

 Serial Data Register (SRL: $006, SRU: $007)

 Port Mode Register A (PMRA: $004)

 Port Mode Register C (PMRC: $025)

 Miscellaneous Register (MIS: $00C)

79

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