R5F21275SNFP#U0 Renesas Electronics America, R5F21275SNFP#U0 Datasheet - Page 297

IC R8C/27 MCU FLASH 32LQFP

R5F21275SNFP#U0

Manufacturer Part Number
R5F21275SNFP#U0
Description
IC R8C/27 MCU FLASH 32LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/27r
Datasheet

Specifications of R5F21275SNFP#U0

Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
LED, POR, Voltage Detect, WDT
Number Of I /o
25
Program Memory Size
24KB (24K x 8)
Program Memory Type
FLASH
Ram Size
1.5K 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
32-LQFP
For Use With
R0K521276S000BE - KIT DEV RSK-R8C/26-29R0E521000EPB00 - PROBE EMULATOR FOR PC7501
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
R5F21275SNFP#U0
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Company:
Part Number:
R5F21275SNFP#U0R5F21275SNFP#V2
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Company:
Part Number:
R5F21275SNFP#U0R5F21275SNFP#X6
Manufacturer:
Renesas Electronics America
Quantity:
10 000
Company:
Part Number:
R5F21275SNFP#U0R5F21275SNFPW4W4NG
Manufacturer:
SHARP
Quantity:
3 040
R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
Figure 16.15
16.2.5.3
RDRF bit in
SSSR register
RSSTP bit in
SSCRH register
Figure 16.15 shows an Example of Clock Synchronous Serial I/O with Chip Select Operation for Data
Reception (Clock Synchronous Communication Mode).
During data reception, clock synchronous serial I/O with chip select operates as described below. When the
clock synchronous serial I/O with chip select is set as the master device, it outputs a synchronous clock and
inputs data. When the clock synchronous serial I/O with chip select is set as a slave device, it inputs data
synchronized with the input clock.
When clock synchronous serial I/O with chip select is set as a master device, it outputs a receive clock and starts
receiving by performing dummy read of the SSRDR register.
After 8 bits of data are received, the RDRF bit in the SSSR register is set to 1 (data in the SSRDR register) and
receive data is stored in the SSRDR register. When the RIE bit in the SSER register is set to 1 (RXI and OEI
interrupt requests enabled), the RXI interrupt request is generated. If the SSDR register is read, the RDRF bit is
automatically set to 0 (no data in the SSRDR register).
Read the receive data after setting the RSSTP bit in the SSCRH register to 1 (after receiving 1 byte of data, the
receive operation is completed). Clock synchronous serial I/O with chip select outputs a clock for receiving 8
bits of data and stops. After that, set the RE bit in the SSER register to 0 (receive disabled) and the RSSTP bit to
0 (receive operation is continued after receiving the 1 byte of data) and read the receive data. If the SSRDR
register is read while the RE bit is set to 1 (receive enabled), a receive clock is output again.
When the 8th clock rises while the RDRF bit is set to 1, the ORER bit in the SSSR register is set to 1 (overrun
error: OEI) and the operation is stopped. When the ORER bit is set to 1, receive cannot be performed. Confirm
that the ORER bit is set to 0 before restarting receive.
Figure 16.16 shows a Sample Flowchart for Data Reception (MSS = 1) (Clock Synchronous Communication
Mode).
Processing
by program
Sep 26, 2008
• SSUMS = 0 (clock synchronous communication mode), CPHS = 0 (data download at
even edges), and CPOS bit = 0 (“H” when clock stops)
SSCK
Data Reception
Example of Clock Synchronous Serial I/O with Chip Select Operation for Data
Reception (Clock Synchronous Communication Mode)
SSI
1
0
1
0
Dummy read in
SSRDR register
Page 278 of 453
b0
RXI interrupt request
generation
1 frame
Read data in SSRDR
register
b7
b0
RXI interrupt request
generation
1 frame
Set RSSTP bit to 1
b7
16. Clock Synchronous Serial Interface
b0
Read data in
SSRDR register
RXI interrupt request
generation
b7

Related parts for R5F21275SNFP#U0