R5F2121AJFP#U0 Renesas Electronics America, R5F2121AJFP#U0 Datasheet - Page 303

• 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 16.2
SS Control Register H
b7 b6 b5 b4 b3 b2 b1 b0
NOTES:
1.
2.
3.
The set clock is used w hen the internal clock is selected.
The SSCK pin functions as the transfer clock output pin w hen the MSS bit is set to 1 (operates as master device).
The MSS bit is set to 0 (operates as slave device) w hen the CE bit in the SSSR register is set to 1 (conflict error
occurs).
The RSSTP bit is disabled w hen the MSS bit is set to 0 (operates as slave device).
SSCRH Register
Bit Symbol
(b4-b3)
Symbol
SSCRH
RSSTP
CKS0
CKS1
CKS2
Page 285 of 458
MSS
(b7)
—
—
Transfer clock rate select bit
Nothing is assigned. If necessary, set to 0.
When read, the content is 0.
Master/slave device select bit
Receive single stop bit
Nothing is assigned. If necessary, set to 0.
When read, the content is 0.
Address
Bit Name
00B8h
(3)
(1)
(2)
b2 b1 b0
0 0 0 : f1/256
0 0 1 : f1/128
0 1 0 : f1/64
0 1 1 : f1/32
1 0 0 : f1/16
1 0 1 : f1/8
1 1 0 : f1/4
1 1 1 : Do not set
0 : Operates as slave device
1 : Operates as master device
0 : Maintains receive operation after
1 : Completes receive operation after
receiving 1-byte data
receiving 1-byte data
16. Clock Synchronous Serial Interface
After Reset
Function
00h
RW
RW
RW
RW
RW
RW
—
—