r5f21346mnfp Renesas Electronics Corporation., r5f21346mnfp Datasheet - Page 557

no-image

r5f21346mnfp

Manufacturer Part Number
r5f21346mnfp
Description
Single-chip Mcus Incorporates The R8c Cpu Core
Manufacturer
Renesas Electronics Corporation.
Datasheet

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
r5f21346mnfp#V0
Manufacturer:
Renesas Electronics America
Quantity:
10 000
R8C/34M Group
R01UH0131EJ0100 Rev.1.00
Jun 21, 2011
Figure 25.13
25.5.4
When setting the SSUMS bit in the SSMR2 register to 1 (4-wire bus communication mode) and the CSS1 bit in
the SSMR2 register to 1 (functions as SCS output pin), set the MSS bit in the SSCRH register to 1 (operates as
the master device) and check the arbitration of the SCS pin before starting serial transfer. If synchronous serial
communication unit detects that the synchronized internal SCS signal is held “L” in this period, the CE bit in
the SSSR register is set to 1 (conflict error) and the MSS bit is automatically set to 0 (operates as a slave
device).
Figure 25.13 shows the Arbitration Check Timing.
Future transmit operations are not performed while the CE bit is set to 1. Set the CE bit to 0 (no conflict error)
before starting transmission.
(synchronization)
SSCRH register
Transfer start
Internal SCS
SCS Pin Control and Arbitration
SCS output
MSS bit in
SCS input
Arbitration Check Timing
CE
High-impedance
During arbitration detection
Data write to
SSTDR register
25. Synchronous Serial Communication Unit (SSU)
Maximum time of SCS internal
synchronization
Page 525 of 740

Related parts for r5f21346mnfp