R5F2121AJFP#U0 Renesas Electronics America, R5F2121AJFP#U0 Datasheet - Page 311

• Manufacturer Part Number: R5F2121AJFP#U0
• Description: MCU FLASH 96K 5K CMOS 48-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/21r

Specifications of R5F2121AJFP#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: 96KB (96K x 8)
• Program Memory Type: FLASH
• Ram Size: 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
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/20 Group, R8C/21 Group
Rev.2.00 Aug 27, 2008
REJ09B0250-0200
Figure 16.10
(“L” when clock stops)
(“H” when clock stops)
(“H” when clock stops)
(“L” when clock stops)
• When SSUMS bit = 0 (clock synchronous communication mode), CPHS bit = 0 (data change at odd
• When SSUMS bit = 1 (4-wire bus communication mode) and CPHS bit = 0 (data change at odd edge)
• When SSUMS bit = 1 (4-wire bus communication mode), CPHS bit = 1 (data download at odd edge)
edge) and CPOS bit = 0 (“H” when clock stops)
CPOS = 1
CPOS = 1
SSO, SSI
CPOS = 0
SSO, SSI
CPOS = 0
Association between Transfer Clock Polarity, Phase, and Transfer Data
SSO, SSI
SCS
SCS
SSCK
SSCK
SSCK
SSCK
SSCK
CPHS and CPOS: bits in SSMR register, SSUMS: Bits in SSMR2 register
Page 293 of 458
b0
b0
b0
b1
b1
b1
b2
b2
b2
b3
b3
b3
b4
b4
b4
16. Clock Synchronous Serial Interface
b5
b5
b5
b6
b6
b6
b7
b7
b7