R5F21334CNFP#U0 Renesas Electronics America, R5F21334CNFP#U0 Datasheet - Page 465

• Manufacturer Part Number: R5F21334CNFP#U0
• Description: MCU 1KB FLASH 16K ROM 32-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/33Cr

Specifications of R5F21334CNFP#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: 27
• 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 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/33C Group
REJ09B0570-0100 Rev.1.00 Dec. 14, 2009
Page 435 of 589
Figure 25.17
Notes:
1. Do not generate interrupts while processing steps (1) to (3).
2. For 1 byte of data reception, skip steps (2) to (6) after step (1) and jump to process step (7).
Process step (8) is a dummy read from the ICDRR register.
ICSR register
ICCR1 register
ICSR register
ICIER register
ICIER register
ICCR1 register
ICSR register
ICCR2 register
ICCR1 register
ICCR1 register
Read RDRF bit in ICSR register
Read RDRF bit in ICSR register
Read STOP bit in ICSR register
Dummy read in ICDRR register
Register Setting Example in Master Receive Mode (I
No
No
No
Read ICDRR register
Read ICDRR register
Read ICDRR register
Master receive mode
Last receive - 1?
Yes
Yes
Yes
RDRF = 1?
RDRF = 1?
STOP = 1?
ACKBT bit ← 0
ACKBT bit ← 1
TEND bit ← 0
TDRE bit ← 0
RCVD bit ← 1
STOP bit ← 0
RCVD bit ← 0
End
BBSY bit ← 0
TRS bit ← 0
SCP bit ← 0
MST bit ← 0
No
Yes
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
(1) Set the TEND bit to 0 and set to master receive mode.
(2) Set the ACKBT bit to the transmit device.
(3) Dummy read the ICDRR register.
(4) Wait until 1 byte is received.
(5) Determine (last receive - 1).
(6) Read the receive data.
(7) Set the ACKBT bit of the last byte and set continuous
(8) Read the receive data of (last byte - 1).
(9) Wait until the last byte is received.
(10) Set the STOP bit to 0.
(11) Generate a stop condition.
(12) Wait until a stop condition is generated.
(13) Read the receive data of the last byte.
(14) Set the RCVD bit to 0.
(15) Set to slave receive mode.
Set the TDRE bit to 0.
receive operation to disable (RCVD = 1).
2
C bus Interface Mode)
(1, 2)
(1)
25. I
(2)
(1)
2
C bus Interface