R5F21276SNFP#U0 Renesas Electronics America, R5F21276SNFP#U0 Datasheet - Page 327
R5F21276SNFP#U0
Manufacturer Part Number
R5F21276SNFP#U0
Description
IC R8C/27 MCU FLASH 32LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/27r
Specifications of R5F21276SNFP#U0
Core Size
16/32-Bit
Program Memory Size
32KB (32K x 8)
Core Processor
R8C
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
LED, POR, Voltage Detect, WDT
Number Of I /o
25
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
No. Of I/o's
25
Ram Memory Size
1.5KB
Cpu Speed
20MHz
No. Of Timers
4
Digital Ic Case Style
LQFP
Supply Voltage Range
2.2V To 5.5V
Embedded Interface Type
I2C, UART
Rohs Compliant
Yes
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
R0K521276S000BE - KIT DEV RSK-R8C/26-29R0E521000EPB00 - PROBE EMULATOR FOR PC7501
Eeprom Size
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
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Manufacturer
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R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
16.3.3.4
In slave transmit mode, the slave device outputs the transmit data while the master device outputs the receive
clock and returns an acknowledge signal.
Figures 16.36 and 16.37 show the Operating Timing in Slave Transmit Mode (I
The transmit procedure and operation in slave transmit mode are as follows.
(1) Set the ICE bit in the ICCR1 register to 1 (transfer operation enabled). Set bits WAIT and MLS in the
(2) When the slave address matches at the 1st frame after detecting the start condition, the slave device
(3) When the TDRE bit in the ICDRT register is set to 1 after writing the last transmit data to the ICDRT
(4) The SCL signal is released by setting the TRS bit to 0 and performing a dummy read of the ICDRR
(5) Set the TDRE bit to 0.
Sep 26, 2008
ICMR register and bits CKS0 to CKS3 in the ICCR1 register (initial setting). Set bits TRS and MST in
the ICCR1 register to 0 and wait until the slave address matches in slave receive mode.
outputs the level set by the ACKBT bit in the ICIER register to the SDA pin at the rise of the 9th clock
cycle. At this time, if the 8th bit of data (R/W) is 1, bits TRS and TDRE in the ICSR register are set to 1,
and the mode is switched to slave transmit mode automatically. Continuous transmission is enabled by
writing transmit data to the ICDRT register every time the TDRE bit is set to 1.
register, wait until the TEND bit in the ICSR register is set to 1 while the TDRE bit is set to 1. When the
TEND bit is set to 1, set the TEND bit to 0.
register to end the process.
Slave Transmit Operation
Page 308 of 453
16. Clock Synchronous Serial Interface
2
C bus Interface Mode).
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