R5F21257SYFP#U0 Renesas Electronics America, R5F21257SYFP#U0 Datasheet - Page 48

• Manufacturer Part Number: R5F21257SYFP#U0
• Description: MCU 2KB FLASH 48K 52-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/25r

Specifications of R5F21257SYFP#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: 48KB (48K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.5K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 105°C
• Package / Case: 52-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
Figure 5.5
Figure 5.6
Feb 29, 2008
Example of Hardware Reset Circuit and Operation
Detection Circuit) and Operation
Example of Hardware Reset Circuit (Usage Example of External Supply Voltage
RESET
Page 29 of 485
VCC
RESET
NOTE:
NOTE:
VCC
1. Refer to 20. Electrical Characteristics.
1. Refer to 20. Electrical Characteristics.
Example when
VCC = 5 V
Supply voltage
detection circuit
RESET
VCC
0 V
0 V
RESET
VCC
5 V
0 V
5 V
0 V
td(P-R) + 10 µs or more
2.2 V
td(P-R) + 10 µs or more
2.2 V
0.2 VCC or below
5. Resets