R5F21257SYFP#U0 Renesas Electronics America, R5F21257SYFP#U0 Datasheet - Page 122
![MCU 2KB FLASH 48K 52-LQFP](/photos/28/61/286101/52-lqfp_sml.jpg)
R5F21257SYFP#U0
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
-
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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
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