R5F2121AJFP#U0 Renesas Electronics America, R5F2121AJFP#U0 Datasheet - Page 340

• 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
16.3.1
Table 16.6
CKS3 CKS2 CKS1 CKS0
0
1
When the MST bit in the ICCR1 register is set to 0, the transfer clock is the external clock input from the SCL
pin. When the MST bit in the ICCR1 register is set to 1, the transfer clock is the internal clock selected by the
CKS0 to CKS3 bits in the ICCR1 register and the transfer clock is output from the SCL pin.
Table 16.6 lists the Transfer Rate Examples.
ICCR1 Register
0
1
0
1
Transfer Clock
Transfer Rate Examples
0
1
0
1
0
1
0
1
Page 322 of 458
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Transfer
f1/100
f1/112
f1/128
f1/128
f1/160
f1/200
f1/224
f1/256
Clock
f1/28
f1/40
f1/48
f1/64
f1/80
f1/56
f1/80
f1/96
f1 = 5 MHz f1 = 8 MHz f1 = 10 MHz f1 = 16 MHz f1 = 20 MHz
78.1 kHz
62.5 kHz
50.0 kHz
44.6 kHz
39.1 kHz
89.3 kHz
62.5 kHz
52.1 kHz
39.1 kHz
31.3 kHz
25.0 kHz
22.3 kHz
19.5 kHz
179 kHz
125 kHz
104 kHz
80.0 kHz
71.4 kHz
62.5 kHz
83.3 kHz
62.5 kHz
50.0 kHz
40.0 kHz
35.7 kHz
31.3 kHz
286 kHz
200 kHz
167 kHz
125 kHz
100 kHz
143 kHz
100 kHz
Transfer Rate
89.3 kHz
78.1 kHz
78.1 kHz
62.5 kHz
50.0 kHz
44.6 kHz
39.1 kHz
357 kHz
250 kHz
208 kHz
156 kHz
125 kHz
100 kHz
179 kHz
125 kHz
104 kHz
16. Clock Synchronous Serial Interface
80.0 kHz
71.4 kHz
62.5 kHz
571 kHz
400 kHz
333 kHz
250 kHz
200 kHz
160 kHz
143 kHz
125 kHz
286 kHz
200 kHz
167 kHz
125 kHz
100 kHz
89.3 kHz
78.1 kHz
714 kHz
500 kHz
417 kHz
313 kHz
250 kHz
200 kHz
179 kHz
156 kHz
357 kHz
250 kHz
208 kHz
156 kHz
125 kHz
100 kHz