R5F21237DFP#U0 Renesas Electronics America, R5F21237DFP#U0 Datasheet - Page 322
![IC R8C/23 MCU FLASH 48-LQFP](/photos/12/18/121887/r5f21237dfp_u0_sml.jpg)
R5F21237DFP#U0
Manufacturer Part Number
R5F21237DFP#U0
Description
IC R8C/23 MCU FLASH 48-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/2x/23r
Specifications of R5F21237DFP#U0
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
CAN, 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)
2.7 V ~ 5.5 V
Data Converters
A/D 12x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
48-LQFP
For Use With
RCDK8C - KIT DEV EVAL FOR CAN R8C/23R0K521237S000BE - KIT DEV RSK R8C/23R0E521237CPE00 - EMULATOR COMPACT R8C/20/21/22/23
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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R8C/22 Group, R8C/23 Group
Rev.2.00 Aug 20, 2008
REJ09B0251-0200
Figure 16.7
SS Mode Register 2
b7 b6 b5 b4
NOTES:
1.
2.
3.
4.
5.
Refer to 16.2.2.1 Association betw een Data I/O Pins and SS Shift Register for the combination of the data I/O
pin.
The SCS
set to 0 (clock synchronous communication mode).
This bit functions as the SCS
The BIDE bit is disabled w hen the SSUMS bit is set to 0 (clock synchronous communication mode).
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
(CMOS output).
b3
______
b2 b1
SSMR2 Register
pin functions as a port, regardless of the contents of the CSS0 and CSS1 bits w hen the SSUMS bit is
b0
Bit Symbol
SSUMS
SCKOS
Symbol
SSMR2
SOOS
CSOS
SCKS
CSS0
CSS1
Page 300 of 501
BIDE
_____
Clock synchronous serial I/O w ith
chip select mode select bit
_____
SCS
SSO pin open drain output select
bit
SSCK pin open drain output
select bit
_____
SCS
SSCK pin select bit
Bidirectional mode enable bit
input pin before starting transfer.
(1)
pin open drain output select 0 : CMOS output
pin select bit
Address
Bit Name
00BDh
(2)
(1)
(1,4)
b5 b4
0 0 : Functions as port
0 : Clock synchronous communication mode
1 : Four-w ire bus communication mode
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 1 : Function as SCS
1 0 : Function as SCS
1 1 : Functions as SCS
0 : Functions as port
1 : Functions as serial clock pin
0 : Standard mode (communicates using 2
1 : Bidirectional mode (communicates using
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
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