R5F21257SYFP#U0 Renesas Electronics America, R5F21257SYFP#U0 Datasheet - Page 335
R5F21257SYFP#U0
Manufacturer Part Number
R5F21257SYFP#U0
Description
MCU 2KB FLASH 48K 52-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/25r
Specifications of R5F21257SYFP#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
48KB (48K x 8)
Program Memory Type
FLASH
Ram Size
2.5K x 8
Voltage - Supply (vcc/vdd)
2.2 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 105°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 16.10
(“H” when clock stops)
(“L” when clock stops)
(“L” when clock stops)
(“H” when clock stops)
Feb 29, 2008
• SSUMS = 0 (clock synchronous communication mode), CPHS bit = 0 (data change at odd
• SSUMS = 1 (4-wire bus communication mode) and CPHS = 0 (data change at odd edge)
• SSUMS = 1 (4-wire bus communication mode) and CPHS = 1 (data download at odd edge)
CPOS = 1
Association between Transfer Clock Polarity, Phase, and Transfer Data
CPOS = 1
SSO, SSI
CPOS = 0
CPOS = 0
SSO, SSI
edge), and CPOS bit = 0 (“H” when clock stops)
SSO, SSI
SCS
SCS
SSCK
SSCK
SSCK
SSCK
SSCK
CPHS and CPOS: Bits in SSMR register, SSUMS: Bits in SSMR2 register
Page 316 of 485
b0
b0
b0
b1
b1
b1
b2
b2
b2
b3
b3
b3
b4
b4
b4
16. Clock Synchronous Serial Interface
b5
b5
b5
b6
b6
b6
b7
b7
b7
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