R5F21256SNFP#U0 Renesas Electronics America, R5F21256SNFP#U0 Datasheet - Page 332

• Manufacturer Part Number: R5F21256SNFP#U0
• Description: IC R8C MCU FLASH 32K 52LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/25r

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: -

R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
Figure 16.7
SS Mode Register 2
b7 b6 b5 b4
NOTES:
1.
2.
3.
4.
5. The SSI pin and SSO pin corresponding port direction bits are set to 0 (input mode) w hen the SOOS bit is set to 0
Refer to 16.2.2.1 Association betw een Data I/O Pins and SS Shift Register for information on combinations of
data I/O pins.
The SCS
(clock synchronous communication mode).
This bit functions as the SCS input pin before starting transfer.
The BIDE bit is disabled w hen the SSUMS bit is set to 0 (clock synchronous communication mode).
(CMOS output).
Feb 29, 2008
b3
_____
b2 b1
SSMR2 Register
pin functions as a port, regardless of the values of bits CSS0 and CSS1 w hen the SSUMS bit is set to 0
b0
Bit Symbol
SSUMS
SCKOS
Symbol
SSMR2
SOOS
CSOS
SCKS
CSS0
CSS1
BIDE
Page 313 of 485
Clock synchronous serial I/O w ith
chip select mode select bit
_____
SCS
select bit
Serial data pin open output drain
select bit
SSCK pin open drain output
select bit
_____
SCS
SSCK pin select bit
Bidirectional mode enable bit
pin open drain output
pin select bits
(1)
Address
Bit Name
00BDh
(2)
(1)
(1, 4)
0 : Clock synchronous communication mode
1 : Four-w ire bus communication mode
0 : CMOS output
1 : N-channel open drain output
0 : CMOS output
1 : N-channel open drain output
0 : CMOS output
1 : N-channel open drain output
0 : Functions as port
1 : Functions as serial clock pin
0 : Standard mode (communication using 2
1 : Bidirectional mode (communication using
b5 b4
0 0 : Functions as port
0 1 : Functions as SCS
1 0 : Functions as SCS
1 1 : Functions as SCS
pins of data input and data output)
1 pin of data input and data output)
16. Clock Synchronous Serial Interface
(5)
After Reset
Function
_____
_____
_____
00h
input pin
output pin
output pin
(3)
(3)
RW
RW
RW
RW
RW
RW
RW
RW
RW