R5F21258SNFP#U0 Renesas Electronics America, R5F21258SNFP#U0 Datasheet - Page 336

• Manufacturer Part Number: R5F21258SNFP#U0
• Description: IC R8C/25 MCU FLASH 52LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/25r

Specifications of R5F21258SNFP#U0

• Core Size: 16/32-Bit
• Program Memory Size: 64KB (64K x 8)
• Core Processor: R8C
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, Voltage Detect, WDT
• Number Of I /o: 41
• Program Memory Type: FLASH
• Ram Size: 3K 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
• No. Of I/o's: 41
• Ram Memory Size: 3KB
• Cpu Speed: 20MHz
• No. Of Timers: 4
• Digital Ic Case Style: LQFP
• Supply Voltage Range: 2.2V To 5.5V
• Embedded Interface Type: I2C, UART
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: YMCRPR8C25 - REF PLATFORM MOTOR CTRL R8C/25R0K521256S000BE - KIT EVAL STARTER FOR R8C/25
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
Figure 16.11
16.2.2
• SSUMS = 0
• SSUMS = 1 (4-wire bus communication mode),
16.2.2.1
(clock synchronous communication mode)
BIDE = 0 (standard mode), and MSS = 0 (operates
as slave device)
The SSTRSR register is a shift register for transmitting and receiving serial data.
When transmit data is transferred from the SSTDR register to the SSTRSR register and the MLS bit in the
SSMR register is set to 0 (MSB-first), the bit 0 in the SSTDR register is transferred to bit 0 in the SSTRSR
register. When the MLS bit is set to 1 (LSB-first), bit 7 in the SSTDR register is transferred to bit 0 in the
SSTRSR register.
The connection between the data I/O pins and SSTRSR register (SS shift register) changes according to a
combination of the MSS bit in the SSCRH register and the SSUMS bit in the SSMR2 register. The connection
also changes according to the BIDE bit in the SSMR2 register.
Figure 16.11 shows the Association between Data I/O Pins and SSTRSR Register.
SSTRSR register
SSTRSR register
Feb 29, 2008
SS Shift Register (SSTRSR)
Association between Data I/O Pins and SS Shift Register
Association between Data I/O Pins and SSTRSR Register
Page 317 of 485
SSO
SSI
SSO
SSI
• SSUMS = 1 (4-wire bus communication mode),
• SSUMS = 1 (4-wire bus communication mode) and
BIDE = 0 (standard mode), and MSS = 1 (operates as
master device)
BIDE = 1 (bidirectional mode)
SSTRSR register
SSTRSR register
16. Clock Synchronous Serial Interface
SSO
SSI
SSO
SSI