R5F21324ANSP#U1 Renesas Electronics America, R5F21324ANSP#U1 Datasheet - Page 65
R5F21324ANSP#U1
Manufacturer Part Number
R5F21324ANSP#U1
Description
MCU 1KB FLASH 16K ROM 20-LSSOP
Manufacturer
Renesas Electronics America
Series
R8C/3x/32Ar
Datasheet
1.R5F21322ANSPU1.pdf
(629 pages)
Specifications of R5F21324ANSP#U1
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, PWM, Voltage Detect, WDT
Number Of I /o
15
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
20-LSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Under development
R8C/32A Group
REJ09B0458-0020 Rev.0.20
Page 35 of 583
5.5
5.6
When the PM12 bit in the PM1 register is set to 1 (reset when watchdog timer underflows), the MCU resets its pins,
CPU, and SFR if the watchdog timer underflows. Then the program beginning with the address indicated by the
reset vector is executed. After reset, the low-speed on-chip oscillator clock with no division is automatically
selected as the CPU clock.
Refer to 4. Special Function Registers (SFRs) for the states of the SFRs after watchdog timer reset.
The internal RAM is not reset. When the watchdog timer underflows, the contents of internal RAM are undefined.
The underflow period and refresh acknowledge period for the watchdog timer can be set by bits WDTUFS0 to
WDTUFS1 and bits WDTRCS0 to WDTRCS1 in the OFS2 register, respectively.
Refer to 14. Watchdog Timer for details of the watchdog timer.
When the PM03 bit in the PM0 register is set to 1 (MCU reset), the MCU resets its pins, CPU, and SFR. The
program beginning with the address indicated by the reset vector is executed. After reset, the low-speed on-chip
oscillator clock with no division is automatically selected for the CPU clock.
Refer to 4. Special Function Registers (SFRs) for the states of the SFRs after software reset.
The internal RAM is not reset.
Watchdog Timer Reset
Software Reset
Preliminary specification
Specifications in this manual are tentative and subject to change.
Nov 05, 2008
5. Resets
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