R5F211B1SP#U0 Renesas Electronics America, R5F211B1SP#U0 Datasheet - Page 72

• 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
Figure 7.9
When the VW2C1 bit is set
to 0 (digital filter enabled).
When the VW2C1 bit is
set to 1 (digital filter
disabled) and the
VW2C7 bit is set to 0
(Vdet2 or above).
When the VW2C1 bit is
set to 1 (digital filter
disabled) and the
VW2C7 bit is set to 1
(Vdet2 or below).
VCA13: Bit in VCA1 register
VW2C1, VW2C2, VW2C6, VW2C7: Bit in VW2C register
Dec 08, 2006
Operating Example of Voltage Monitor 2 Interrupt and Voltage Monitor 2 Reset
VCA13 bit
VW2C2 bit
Voltage monitor 2
interrupt request
(VW2C6 = 0)
Internal reset signal
(VW2C6 = 1)
VW2C2 bit
Voltage monitor 2
interrupt request
(VW2C6 = 0)
VW2C2 bit
Voltage monitor 2
interrupt request
(VW2C6 = 0)
Internal reset signal
(VW2C6 = 1)
The above applies under the following conditions.
NOTE:
• VCA27 bit in VCA2 register = 1 (voltage detection 2 circuit enabled)
• VW2C0 bit in VW2C register = 1 (voltage monitor 2 interrupt and voltage monitor 2 reset enabled)
(Typ. 3.30 V)
1. If voltage monitor 1 reset is not used, set the power supply to VCC ≥ 2.7.
Page 54 of 315
2.7 V
Vdet2
(1)
VCC
1
0
1
0
1
0
1
0
Sampling clock of digital filter
x 4 cycles
Set to 0 by interrupt
request acknowledgement
Set to 0 by a program
Set to 0 by interrupt request
acknowledgement
Set to 0 by a program
Sampling clock of digital filter
x 4 cycles
7. Voltage Detection Circuit
Set to 0 by a program
Set to 0 by interrupt
request
acknowledgement