R5F21257SNFP#U0 Renesas Electronics America, R5F21257SNFP#U0 Datasheet - Page 382
![IC R8C/25 MCU FLASH 52LQFP](/photos/12/37/123739/r5f21257snfp_u0_sml.jpg)
R5F21257SNFP#U0
Manufacturer Part Number
R5F21257SNFP#U0
Description
IC R8C/25 MCU FLASH 52LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/25r
Specifications of R5F21257SNFP#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
48KB (48K x 8)
Program Memory Type
FLASH
Ram Size
2.5K 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
- Current page: 382 of 527
- Download datasheet (6Mb)
R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
Figure 16.46
16.3.7
Figures 16.46 to 16.49 show Examples of Register Setting When Using I
Feb 29, 2008
Examples of Register Setting
Example of Register Setting in Master Transmit Mode (I
ICCR1 register
ICCR2 register
ICSR register
ICSR register
ICCR2 register
ICCR1 register
ICSR register
Read STOP bit in ICSR register
Write transmit data to ICDRT register
Write transmit data to ICDRT register
Write transmit data to ICDRT register
Read ACKBR bit in ICIER register
Read BBSY bit in ICCR2 register
Read TEND bit in ICSR register
Read TDRE bit in ICSR register
Read TEND bit in ICSR register
No
No
No
No
No
No
Page 363 of 485
ACKBR = 0 ?
Initial setting
TEND = 1 ?
TDRE = 1 ?
TEND = 1 ?
BBSY = 0 ?
Yes
Last byte ?
STOP = 1 ?
TDRE bit ← 0
Transmit
mode ?
TRS bit ← 1
MST bit ← 1
SCP bit ← 0
BBSY bit ← 1
TEND bit ← 0
SCP bit ← 0
BBSY bit ← 0
TRS bit ← 0
MST bit ← 0
STOP bit ← 0
Start
End
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
(15)
Master receive
mode
• Set the STOP bit in the ICSR register to 0
• Set the IICSEL bit in the PMR register to 1
(1) Judge the state of the SCL and SDA lines
(2) Set to master transmit mode
(3) Generate the start condition
(4) Set the transmit data of the 1st byte
(5) Wait for 1 byte to be transmitted
(6) Judge the ACKBR bit from the specified slave device
(7) Set the transmit data after 2nd byte (except the last byte)
(8) Wait until the ICRDT register is empty
(9) Set the transmit data of the last byte
(10) Wait for end of transmission of the last byte
(11) Set the TEND bit to 0
(12) Set the STOP bit to 0
(13) Generate the stop condition
(14) Wait until the stop condition is generated
(15) Set to slave receive mode
(slave address + R/W)
Set the TDRE bit to 0
16. Clock Synchronous Serial Interface
2
C bus interface.
2
C bus Interface Mode)
Related parts for R5F21257SNFP#U0
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![R0K330290S001BE](/photos/28/41/284146/r0k330290s001be_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR M16C/29
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K5212D8S001BE](/photos/24/13/241324/4607177_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR R8C/2D
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K33062PS001BE](/photos/24/13/241320/4607173_tmb.jpg)
Part Number:
Description:
R0K33062P STARTER KIT
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K521237S001BE](/photos/28/41/284170/r0k521237s001be_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR R8C/23 E8A
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K521256S001BE](/photos/24/13/241323/4607176_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR R8C/25
Manufacturer:
Renesas Electronics America
Datasheet:
![YLCDRSK2456S](/images/manufacturer_photos/0/5/560/renesas_electronics_america_tmb.jpg)
Part Number:
Description:
KIT STARTER H8S2456 SHARPE DSPLY
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K521380S000BE](/photos/28/41/284144/r0k521380s000be_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR R8C38C
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K521350S000BE](/photos/28/41/284145/r0k521350s000be_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR R8C35C
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K52L3A0S000BE](/photos/28/41/284149/r0k52l3a0s000be_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR R8CL3AC+LCD APPS
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K556100S000BE](/images/manufacturer_photos/0/5/560/renesas_electronics_america_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR RX610
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K564189S000BE](/photos/28/41/284173/r0k564189s000be_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR R32C/118
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K521276S000BE](/photos/9/26/92647/r0k521276s000be_tmb.jpg)
Part Number:
Description:
KIT DEV RSK-R8C/26-29
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K571242S001BE](/photos/9/23/92397/r0k571242s001be_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR SH7124
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K561622S000BE](/photos/9/23/92398/r0k561622s000be_tmb.jpg)
Part Number:
Description:
KIT STARTER FOR H8SX/1622
Manufacturer:
Renesas Electronics America
Datasheet:
![R0K572030S000BE](/photos/9/24/92406/r0k572030s000be_tmb.jpg)
Part Number:
Description:
KIT DEV FOR SH7203
Manufacturer:
Renesas Electronics America
Datasheet: