R5F211B1SP#U0 Renesas Electronics America, R5F211B1SP#U0 Datasheet - Page 56

• Manufacturer Part Number: R5F211B1SP#U0
• Description: IC R8C MCU FLASH 4K 20SSOP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/1Br

Specifications of R5F211B1SP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SIO, SSU, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 13
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 384 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-SSOP
• For Use With: R0K5211B4S001BE - KIT STARTER FOR R8C/18191A1BR0K5211B4S000BE - KIT DEV EVALUATION R8C/1BR0E521174CPE10 - EMULATOR COMPACT R8C/18/19/1
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/1A Group, R8C/1B Group
Rev.1.30
REJ09B0252-0130
6.
The following resets are implemented: hardware reset, power-on reset, voltage monitor 1 reset, voltage monitor 2
reset, watchdog timer reset, and software reset. Table 6.1 lists the Reset Names and Sources.
Figure 6.1
Table 6.1
Hardware reset
Power-on reset
Voltage monitor 1 reset
Voltage monitor 2 reset
Watchdog timer reset
Software reset
Resets
RESET
VCC
Dec 08, 2006
Reset Name
Reset Names and Sources
Block Diagram of Reset Circuit
Page 38 of 315
reset circuit
Watchdog
Power-on
detection
Voltage
circuit
timer
CPU
Input voltage of RESET pin is held “L”.
VCC rises.
VCC falls (monitor voltage: Vdet1).
VCC falls (monitor voltage: Vdet2).
Underflow of watchdog timer
Write 1 to PM03 bit in PM0 register.
Hardware reset
Voltage monitor 1 reset
Voltage monitor 2 reset
Watchdog timer
reset
Software reset
Power-on reset
VCA13: Bit in VCA1 register
VCA26, VCA27: Bits in VCA2 register
VW1C0 to VW1C2, VW1F0, VW1F1, VW1C6, VW1C7: Bits in VW1C register
VW2C2, VW2C3: Bits in VW2C register
Source
SFRs
SFRs
Pin, CPU, and
SFR bits other than
those listed above
bits VCA26,
VW1C0 and
VW1C6
bits VCA13, VCA27,
VW1C1, VW1C2,
VW1F0, VW1F1, VW1C7,
VW2C2, and VW2C3
6. Resets