R5F21324CNSP#U0 Renesas Electronics America, R5F21324CNSP#U0 Datasheet - Page 452

• Manufacturer Part Number: R5F21324CNSP#U0
• Description: MCU 1KB FLASH 16K ROM 20-LSSOP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/32Cr

Specifications of R5F21324CNSP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, PWM, Voltage Detect, WDT
• Number Of I /o: 15
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-LSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/32C Group
REJ09B0573-0100 Rev.1.00 Dec. 18, 2009
Page 423 of 573
Figure 25.18
ICSR register
ICSR register
ICCR1 register
ICSR register
Write transmit data to ICDRT register
Write transmit data to ICDRT register
Register Setting Example in Slave Transmit Mode (I
Read TDRE bit in ICSR register
Read TEND bit in ICSR register
Dummy read ICDRR register
No
No
No
Slave transmit mode
TDRE = 1?
TEND = 1?
Last byte?
TEND bit ← 0
TDRE bit ← 0
AAS bit ← 0
End
TRS bit ← 0
Yes
Yes
Yes
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(1) Set the AAS bit to 0.
(2) Set the transmit data (except the last byte).
(3) Wait until the ICRDT register is empty.
(4) Set the transmit data of the last byte.
(5) Wait until the last byte is transmitted.
(6) Set the TEND bit to 0.
(7) Set to slave receive mode.
(8) Dummy read the ICDRR register to release
(9) Set the TDRE bit to 0.
the SCL signal.
2
C bus Interface Mode)
25. I
2
C bus Interface