R5F21257SYFP#U0 Renesas Electronics America, R5F21257SYFP#U0 Datasheet - Page 371
![MCU 2KB FLASH 48K 52-LQFP](/photos/28/61/286101/52-lqfp_sml.jpg)
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 16.36
ICCR1 register
(master output)
(master output)
(slave output)
ICSR register
ICDRR register
ICDRS register
RCVD bit in
RDRF bit in
by program
Processing
Feb 29, 2008
SDA
SDA
SCL
1
0
1
0
Operating Timing in Master Receive Mode (I
Data n-1
A
9
(5) Set RCVD bit to 1 before
Page 352 of 485
Data n-1
reading ICDRR register
b7
1
b6
2
b5
3
b4
4
(6) Stop condition
generation
b3
5
b2
6
2
C bus Interface Mode) (2)
b1
7
(7) Read ICDRR register before
16. Clock Synchronous Serial Interface
setting RCVD bit to 0
Data n
b0
8
A/A
Data n
9
(8) Set to slave receive mode
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