R5F21257SNFP#U0 Renesas Electronics America, R5F21257SNFP#U0 Datasheet - Page 122

• Manufacturer Part Number: R5F21257SNFP#U0
• Description: IC R8C/25 MCU FLASH 52LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/25r

Specifications of R5F21257SNFP#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 ~ 85°C
• Package / Case: 52-LQFP
• For Use With: R0K521256S000BE - KIT EVAL STARTER FOR R8C/25
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/24 Group, R8C/25 Group
Rev.3.00
REJ09B0244-0300
12.1.3
12.1.4
12.1.3.1
12.1.3.2
12.1.3.3
12.1.3.4
12.1.3.5
12.1.3.6
Special interrupts are non-maskable.
The watchdog timer interrupt is generated by the watchdog timer. For details, refer to 13. Watchdog Timer.
The oscillation stop detection interrupt is generated by the oscillation stop detection function. For details of the
oscillation stop detection function, refer to 10. Clock Generation Circuit.
The voltage monitor 1 interrupt is generated by the voltage detection circuit. For details of the voltage detection
circuit, refer to 6. Voltage Detection Circuit.
The voltage monitor 2 interrupt is generated by the voltage detection circuit. For details of the voltage detection
circuit, refer to 6. Voltage Detection Circuit.
Do not use these interrupts. They are for use by development tools only.
The address match interrupt is generated immediately before executing an instruction that is stored at an
address indicated by registers RMAD0 to RMAD1 when the AIER0 or AIER1 bit in the AIER register is set to
1 (address match interrupt enable). For details of the address match interrupt, refer to 12.4 Address Match
Interrupt.
The peripheral function interrupt is generated by the internal peripheral function of the MCU and is a maskable
interrupt. Refer to Table 12.2 Relocatable Vector Tables for sources of the peripheral function interrupt. For
details of peripheral functions, refer to the descriptions of individual peripheral functions.
Feb 29, 2008
Special Interrupts
Peripheral Function Interrupt
Watchdog Timer Interrupt
Oscillation Stop Detection Interrupt
Voltage Monitor 1 Interrupt
Voltage Monitor 2 Interrupt
Single-Step Interrupt, and Address Break Interrupt
Address Match Interrupt
Page 103 of 485
12. Interrupts