R5F21274JFP#U0 Renesas Electronics America, R5F21274JFP#U0 Datasheet - Page 340

• Manufacturer Part Number: R5F21274JFP#U0
• Description: MCU FLASH 2K FLASH 16K 32LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/27r

Specifications of R5F21274JFP#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: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
Figure 16.48
NOTE:
1. When receiving 1 byte, skip steps (2) to (6) after (1) and jump to processing step (7).
Sep 26, 2008
Processing step (8) is dummy read of the ICDRR register.
ICSR register
ICIER register ACKBT bit ← 0
ICIER register
Example of Register Setting in Slave Receive Mode (I
Read RDRF bit in ICSR register
Read RDRF bit in ICSR register
Dummy read ICDRR register
No
No
Read ICDRR register
Read ICDRR register
Read ICDRR register
Slave receive mode
RDRF = 1 ?
Yes
RDRF = 1 ?
Last receive
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ACKBT bit ← 1
AAS bit ← 0
End
- 1 ?
No
Yes
Yes
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(1) Set the AAS bit to 0
(2) Set the ACKBT bit to the transmit device
(3) Dummy read the ICDRR register
(4) Wait until 1 byte is received
(5) Judge (last receive - 1)
(6) Read the receive data
(7) Set the ACKBT bit of the last byte
(8) Read the receive data of (last byte - 1)
(9) Wait until the last byte is received
(10) Read the receive data of the last byte
16. Clock Synchronous Serial Interface
2
C bus Interface Mode)
(1)
(1)