R5F21324ANSP#U1 Renesas Electronics America, R5F21324ANSP#U1 Datasheet - Page 79

• 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 49 of 583
6.3
6.3.1
6.3.2
6.3.3
Vdet0 cannot be monitored.
Once the following settings are made, the comparison result of voltage monitor 1 can be monitored by the
VW1C3 bit in the VW1C register after td(E-A) has elapsed (refer to 32. Electrical Characteristics).
(1) Set bits VD1S3 to VD1S0 in the VD1LS register (voltage detection 1 detection voltage).
(2) Set the VCA21 bit in the VCA2 register to 0 (internal reference voltage).
(3) Set the VCA22 bit in the VCA2 register to 0 (VCC voltage).
(4) Set the VCA26 bit in the VCA2 register to 1 (voltage detection 1 circuit enabled).
Once the following settings are made, the comparison result of voltage monitor 2 can be monitored by the
VCA13 bit in the VCA1 register after td(E-A) has elapsed (refer to 32. Electrical Characteristics).
(1) Set the VCA23 bit in the VCA2 register to 0 (internal reference voltage).
(2) Set the VCA24 bit in the VCA2 register to 0 (VCC voltage), or 1 (LVCMP2 pin input voltage).
(3) Set the VCA27 bit in the VCA2 register to 1 (voltage detection 2 circuit enabled).
VCC Input Voltage
Monitoring Vdet0
Monitoring Vdet1
Monitoring Vdet2
Preliminary specification
Specifications in this manual are tentative and subject to change.
Nov 05, 2008
6. Voltage Detection Circuit