R5F21256SNFP#U0 Renesas Electronics America, R5F21256SNFP#U0 Datasheet - Page 385
R5F21256SNFP#U0
Manufacturer Part Number
R5F21256SNFP#U0
Description
IC R8C MCU FLASH 32K 52LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/25r
Datasheets
1.R5F211A2SPU0.pdf
(300 pages)
2.R5F21246SDFPU0.pdf
(61 pages)
3.R5F21246SDFPU0.pdf
(527 pages)
Specifications of R5F21256SNFP#U0
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, Voltage Detect, WDT
Number Of I /o
41
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2K 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
52-LQFP
For Use With
R0K521256S000BE - KIT EVAL STARTER FOR R8C/25
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
R5F21256SNFP#U0R5F21256SNFP#ES
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
Figure 16.49
NOTE:
1. When receiving 1 byte, skip steps (2) to (6) after (1) and jump to processing step (7).
Feb 29, 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
Page 366 of 485
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)
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