R5F21324ANSP#U1 Renesas Electronics America, R5F21324ANSP#U1 Datasheet - Page 56

• Manufacturer Part Number: R5F21324ANSP#U1
• Description: MCU 1KB FLASH 16K ROM 20-LSSOP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/32Ar

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: -

Under development
R8C/32A Group
REJ09B0458-0020 Rev.0.20
Page 26 of 583
5.
The following resets are implemented: hardware reset, power-on reset, voltage monitor 0 reset, watchdog timer reset,
and software reset.
Table 5.1 lists the Reset Names and Sources and Figure 5.1 shows the Block Diagram of Reset Circuit.
Figure 5.1
Table 5.1
Hardware reset
Power-on reset
Voltage monitor 0 reset
Watchdog timer reset
Software reset
RESET
VCC
Resets
Reset Name
Reset Names and Sources
Preliminary specification
Specifications in this manual are tentative and subject to change.
Block Diagram of Reset Circuit
Power-on reset
Watchdog
detection
Voltage
circuit
circuit
timer
CPU
Nov 05, 2008
Input voltage of RESET pin is held “L”
VCC rises
VCC falls (monitor voltage: Vdet0)
Underflow of watchdog timer
Write 1 to PM03 bit in PM0 register
Voltage monitor 0 reset
Watchdog timer
reset
Software reset
Power-on reset
Hardware reset
Note:
1. The CWR bit in the RSTFR register is set to 0 (cold start-up) after power-on or
voltage monitor 0 reset. This bit remains unchanged at a hardware reset,
software reset, or watchdog timer reset.
Source
Pin, CPU, and SFR
5. Resets