R5F21238JFP#U0 Renesas Electronics America, R5F21238JFP#U0 Datasheet - Page 341

• Manufacturer Part Number: R5F21238JFP#U0
• Description: IC R8C/23 MCU FLASH 64K 48LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/23r

Specifications of R5F21238JFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: CAN, I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, Voltage Detect, WDT
• Number Of I /o: 41
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 3K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• For Use With: RCDK8C - KIT DEV EVAL FOR CAN R8C/23R0E521237CPE00 - EMULATOR COMPACT R8C/20/21/22/23
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
Figure 16.20
RDRF bit in
SSSR register
RSSTP bit in
SSCRH register
RDRF bit in
SSSR register
RSSTP bit in
SSCRH register
Process by
program
Process by
program
• When CPHS bit = 0 (data download at even edges) and CPOS bit = 0 (“H” when clock stops)
• When CPHS bit = 1 (data download at odd edges) and CPOS bit = 0 (“H” when clock stops)
(Output)
(Output)
SSCK
SSCK
SCS
SCS
SSI
SSI
Reception (4-Wire Bus Communication Mode)
Example of Clock Synchronous Serial I/O with Chip Select Operation during Data
1
0
1
0
1
0
1
0
CPHS and CPOS: Bit in SSMR register
Dummy read in
SSRDR register
Dummy read in
SSRDR register
Page 319 of 501
b7
b7
1 frame
RXI interrupt request
is generated
RXI interrupt request
is generated
1 frame
b0
Data read in SSRDR
register
Data read in SSRDR
register
b0
b7
b7
1 frame
RXI interrupt request
is generated
RXI interrupt request
is generated
1 frame
b0
b0
16. Clock Synchronous Serial Interface
Set RSSTP
bit to 1
Set RSSTP
bit to 1
b7
b7
Data read in SSRDR
register
Data read in SSRDR
register
RXI interrupt request
is generated
RXI interrupt request
is generated
High-impedance
b0
High-impedance
b0