Slave Transmission - Renesas RL78/G1P Hardware User Manual

16-bit single-chip microcontroller

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11.5.4 Slave transmission

Slave transmission is that the RL78/G1P transmits data to another device in the state of a transfer clock being input

from another device.

3-Wire Serial I/O

Target channel

Error detection flag

Transfer data length

Transfer rate

Data direction

Notes 1. Because the external serial clock input to the SCK00 pin is sampled internally and used, the fastest transfer

2. Use this operation within a range that satisfies the conditions above and the peripheral functions

characteristics in the electrical specifications (see CHAPTER 27 ELECTRICAL SPECIFICATIONS).

Remarks 1. f

: Operation clock frequency of target channel

: Serial clock frequency

2. m: Unit number (m = 0), n: Channel number (n = 0), mn = 00

R01UH0895EJ0100 Rev.1.00

Nov 29, 2019

Channel 0 of SAU0

Transfer end interrupt (in single-transfer mode) or buffer empty interrupt (in continuous transfer mode)

can be selected.

Overrun error detection flag (OVFmn) only

Selectable by the DAPmn bit of the SCRmn register

 DAPmn = 0: Data output starts from the start of the operation of the serial clock.

 DAPmn = 1: Data output starts half a clock before the start of the serial clock operation.

Selectable by the CKPmn bit of the SCRmn register

 CKPmn = 0: Non-reverse

 CKPmn = 1: Reverse

MSB or LSB first

CHAPTER 11 SERIAL ARRAY UNIT