R5F21324CNSP#U0 Renesas Electronics America, R5F21324CNSP#U0 Datasheet - Page 453
R5F21324CNSP#U0
Manufacturer Part Number
R5F21324CNSP#U0
Description
MCU 1KB FLASH 16K ROM 20-LSSOP
Manufacturer
Renesas Electronics America
Series
R8C/3x/32Cr
Datasheet
1.R5F21321CDSPU0.pdf
(605 pages)
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
-
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R8C/32C Group
REJ09B0573-0100 Rev.1.00 Dec. 18, 2009
Page 424 of 573
Figure 25.19
Note:
1. For 1 byte of data reception, skip steps (2) to (6) after (1) and jump to process step (7).
Process step (8) is a dummy read from the ICDRR register.
ICSR register
ICIER register ACKBT bit ← 0
ICIER register
Register Setting Example 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
Last receive - 1?
Yes
RDRF = 1?
RDRF = 1?
ACKBT bit ← 1
AAS bit ← 0
End
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) Determine (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.
2
C bus Interface Mode)
(1)
25. I
2
C bus Interface
(1)
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