R5F21256SNFP#ES Renesas Electronics America, R5F21256SNFP#ES Datasheet - Page 341
R5F21256SNFP#ES
Manufacturer Part Number
R5F21256SNFP#ES
Description
MCU 2/5V 32K 52-LQFP ES SAMPLE
Manufacturer
Renesas Electronics America
Series
R8C/2x/25r
Specifications of R5F21256SNFP#ES
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, Voltage Detect, WDT
Number Of I /o
41
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2K x 8
Voltage - Supply (vcc/vdd)
2.2 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
52-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
Figure 16.14
NOTE:
1. Write 0 after reading 1 to set the TEND bit to 0.
(1)
(2)
(3)
Feb 29, 2008
SSSR register
SSER register
Sample Flowchart of Data Transmission (Clock Synchronous Communication Mode)
Write transmit data to SSTDR register
Read TDRE bit in SSSR register
Read TEND bit in SSSR register
Page 322 of 485
transmission
Initialization
TDRE = 1 ?
TEND = 1 ?
continues?
Start
Data
End
TEND bit ← 0
TE bit ← 0
Yes
No
Yes
No
(1)
Yes
No
(2) Determine whether data transmission continues.
(3) When data transmission is completed, the TEND
(1) After reading the SSSR register and confirming
that the TDRE bit is set to 1, write the transmit
data to the SSTDR register. When the transmit
data is written to the SSTDR register, the TDRE
bit is automatically set to 0.
bit is set to 1. Set the TEND bit to 0 and the TE bit
to 0 and complete transmit mode.
16. Clock Synchronous Serial Interface
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