R5F211B1SP#U0 Renesas Electronics America, R5F211B1SP#U0 Datasheet - Page 62
R5F211B1SP#U0
Manufacturer Part Number
R5F211B1SP#U0
Description
IC R8C MCU FLASH 4K 20SSOP
Manufacturer
Renesas Electronics America
Series
M16C™ M16C/R8C/Tiny/1Br
Datasheets
1.R5F211A2SPU0.pdf
(51 pages)
2.R5F211A2SPU0.pdf
(300 pages)
3.R5F211A2SPU0.pdf
(341 pages)
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
-
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R8C/1A Group, R8C/1B Group
Rev.1.30
REJ09B0252-0130
7.
The voltage detection circuit monitors the input voltage to the VCC pin. This circuit can be used to monitor the VCC
input voltage by a program. Alternately, voltage monitor 1 reset, voltage monitor 2 interrupt, and voltage monitor 2
reset can also be used.
Table 7.1 lists the Specifications of Voltage Detection Circuit and Figures 7.1 to 7.3 show the Block Diagrams. Figures
7.4 to 7.6 show the Associated Registers.
Table 7.1
VCC monitor
Process when voltage is
detected
Digital filter
Voltage Detection Circuit
Dec 08, 2006
Specifications of Voltage Detection Circuit
Item
Page 44 of 315
Voltage to monitor
Detection target
Monitor
Reset
Interrupt
Switch
enabled/disabled
Sampling time
Vdet1
Passing through Vdet1
by rising or falling
None
Voltage monitor 1 reset
Reset at Vdet1 > VCC;
restart CPU operation at
VCC > Vdet1
None
Available
(Divide-by-n of fRING-S)
x 4
n: 1, 2, 4, and 8
Voltage Detection 1
Vdet2
Passing through Vdet2
by rising or falling
VCA13 bit in VCA1
register
Whether VCC is higher
or lower than Vdet2
Voltage monitor 2 reset
Reset at Vdet2 > VCC;
restart CPU operation
after a specified time
Voltage monitor 2
interrupt
Interrupt request at
Vdet2 > VCC and VCC >
Vdet2 when digital filter
is enabled;
interrupt request at
Vdet2 > VCC or VCC >
Vdet2 when digital filter
is disabled
Available
(Divide-by-n of fRING-S)
x 4
n: 1, 2, 4, and 8
7. Voltage Detection Circuit
Voltage Detection 2
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