R5F21334CNFP#U0 Renesas Electronics America, R5F21334CNFP#U0 Datasheet - Page 68

• Manufacturer Part Number: R5F21334CNFP#U0
• Description: MCU 1KB FLASH 16K ROM 32-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/33Cr

Specifications of R5F21334CNFP#U0

• 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: 27
• 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 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/33C Group
REJ09B0570-0100 Rev.1.00 Dec. 14, 2009
Page 38 of 589
Figure 6.1
VCC
Voltage Detection Circuit Block Diagram
VDSEL1 to VDSEL0
VD1S3 to VD1S0
(16 levels)
Selection
(4 levels)
Selection
Circuit
Circuit
Level
Level
reference
Internal
voltage
VCA26
VCA27
VCA25
+
+
+
-
-
-
≥ Vdet2
≥ Vdet0
≥ Vdet1
VCA13: Bit in VCA1 register
VCA25, VCA26, VCA27: Bits in VCA2 register
VW1C3: Bit in VW1C register
VD1S0 to VD1S3: Bits in VD1LS register
VDSEL0, VDSEL1: Bits in OFS register
Voltage detection 0 signal
Voltage detection 1 signal
Voltage detection 2 signal
6. Voltage Detection Circuit
VW1C register
VCA1 register
VW1C3 bit
VCA13 bit
b3
b3