R5F2121AJFP#U0 Renesas Electronics America, R5F2121AJFP#U0 Datasheet - Page 314

• 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
16.2.4
Table 16.4
NOTES:
SSUMS and BIDE: Bits in SSMR2 register
MSS: Bit in SSCRH register
TE and RE: Bits in SSER register
Clock Synchronous
Communication Mode
4-Wire Bus
Communication Mode
4-Wire Bus
(Bidirectional)
Communication Mode
Communication Mode
1. This pin can be used as programmable I/O port.
2. Do not set both the TE and RE bits to 1 in 4-wire bus (bidirectional) communication mode.
Clock synchronous serial I/O with chip select switches functions of the I/O pin in each communication mode
according to the setting of the MSS bit in the SSCRH register and the RE and TE bits in the SSER register.
Table 16.4 shows the Association between Communication Modes and I/O Pins.
Communication Modes and Pin Functions
Association between Communication Modes and I/O Pins
(2)
Page 296 of 458
SSUMS
0
1
1
Disabled
BIDE
0
1
Bit Setting
MSS
0
1
0
1
0
1
TE
0
1
0
1
0
1
0
1
0
1
0
1
16. Clock Synchronous Serial Interface
RE
1
0
1
1
0
1
1
0
1
1
0
1
1
0
1
0
Output
Output
Input
Input
Input
Input
Input
Input
SSI
−
−
−
−
−
−
−
−
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
Pin State
Output
Output
Output
Output
Output
Output
Output
Output
Input
Input
Input
Input
SSO
−
−
−
−
(1)
(1)
(1)
(1)
Output
Output
Output
Output
Output
Output
Output
Output
SSCK
Input
Input
Input
Input
Input
Input
Input
Input