R5F21346CNFP#U0 Renesas Electronics America, R5F21346CNFP#U0 Datasheet - Page 547

• Manufacturer Part Number: R5F21346CNFP#U0
• Description: MCU 1KB FLASH 32K ROM 48-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/34Cr

Specifications of R5F21346CNFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, PWM, Voltage Detect, WDT
• Number Of I /o: 43
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.5K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/34C Group
REJ09B0586-0100 Rev.1.00 Jan 13, 2010
Page 514 of 723
Figure 25.3
25.3.2
• SSUMS = 0
• SSUMS = 1 (4-wire bus communication mode),
25.3.2.1
(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 25.3 shows the Association between Data I/O Pins and SSTRSR Register.
SSTRSR register
SSTRSR register
SS Shift Register (SSTRSR)
Association between Data I/O Pins and SS Shift Register
Association between Data I/O Pins and SSTRSR Register
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)
25. Synchronous Serial Communication Unit (SSU)
SSTRSR register
SSTRSR register
SSO
SSI
SSO
SSI