R5F211B1SP#U0 Renesas Electronics America, R5F211B1SP#U0 Datasheet - Page 66

• 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 7.5
Voltage Monitor 1 Circuit Control Register
b7 b6 b5 b4 b3 b2
NOTES :
1.
2.
3.
Set the PRC3 bit in the PRCR register to 1 (w rite enable) before w riting to this register.
When rew riting the VW1C register, the VW1C2 bit may be set to 1. Set the VW1C2 bit to 0 after rew riting the VW1C
register.
The value remains unchanged after a softw are reset, w atchdog timer reset, or voltage monitor 2 reset.
The VW1C0 bit is enabled w hen the VCA26 bit in the VCA2 register is set to 1 (voltage detection 1 circuit
enabled). Set the VW1C0 bit to 0 (disable), w hen the VCA26 bit is set to 0 (voltage detection 1 circuit disabled).
Dec 08, 2006
0
VW1C Register
b1 b0
Bit Symbol
VW1C0
VW1C2
VW1C6
VW1C7
VW1C1
VW1F0
VW1F1
Symbol
VW1C
(b3)
Page 48 of 315
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Voltage monitor 1 reset enable
bit
Voltage monitor 1 digital filter
disable mode select bit
Reserved bit
Reserved bit
Sampling clock select bits
Voltage monitor 1 circuit mode
select bit
Voltage monitor 1 reset generation
condition select bit
(3)
(1)
Address
Bit Name
0036h
b5 b4
0 0 : fRING-S divided by 1
0 1 : fRING-S divided by 2
1 0 : fRING-S divided by 4
1 1 : fRING-S divided by 8
Hardw are reset : 0000X000b
Pow er-on reset, voltage monitor 1 reset :
0100X001b
0 : Disable
1 : Enable
0 : Digital filter enabled mode
1 : Digital filter disabled mode
Set to 0.
When read, the content is undefined.
When the VW1C0 bit is set to 1 (voltage
monitor 1 reset enabled), set to 1.
When the VW1C1 bit is set to 1 (digital filter
disabled mode), set to 1.
(digital filter circuit enabled)
(digital filter circuit disabled)
After Reset
Function
7. Voltage Detection Circuit
(2)
RW
RW
RW
RW
RW
RW
RW
RW
RO