R5F21254SDFP#U0 Renesas Electronics America, R5F21254SDFP#U0 Datasheet - Page 349
R5F21254SDFP#U0
Manufacturer Part Number
R5F21254SDFP#U0
Description
IC R8C MCU FLASH 52LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/25r
Datasheets
1.R5F211A2SPU0.pdf
(300 pages)
2.R5F21246SDFPU0.pdf
(61 pages)
3.R5F21246SDFPU0.pdf
(527 pages)
Specifications of R5F21254SDFP#U0
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
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.2 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
52-LQFP
For Use With
R0K521256S000BE - KIT EVAL STARTER FOR R8C/25
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
R5F21254SDFP#U0R5F21254SDFP#V2
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
Figure 16.19
TDRE bit in
SSSR register
TEND bit in
SSSR register
TDRE bit in
SSSR register
TEND bit in
SSSR register
Processing
by program
Processing
by program
Feb 29, 2008
• CPHS bit = 0 (data change at odd edges) and CPOS bit = 0 (“H” when clock stops)
• CPHS bit = 1 (data change at even edges) and CPOS bit = 0 (“H” when clock stops)
(output)
(output)
SSCK
SSCK
SSO
Transmission (4-Wire Bus Communication Mode)
SSO
Example of Clock Synchronous Serial I/O with Chip Select Operation during Data
SCS
SCS
1
0
1
0
1
0
1
0
CPHS, CPOS: Bits in SSMR register
Data write to SSTDR register
Data write to SSTDR register
Page 330 of 485
TXI interrupt request is
generated
TXI interrupt request is
generated
b7
b7
1 frame
b6
1 frame
b6
b0
b0
TXI interrupt request is
generated
TXI interrupt request is
generated
b7
1 frame
b7
b6
TEI interrupt request is
generated
TEI interrupt request is
generated
1 frame
16. Clock Synchronous Serial Interface
b6
b0
b0
High-impedance
High-impedance
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