R5F211B1SP#U0 Renesas Electronics America, R5F211B1SP#U0 Datasheet - Page 64

• 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 7.3
Internal
reference
voltage
Voltage detection 2 circuit
Watchdog timer block
VCC
VW2C0 to VW2C3, VW2F2, VW2F1, VW2C6, VW2C7: Bits in VW2C register
VCA13: Bit in VCA1 register
VCA27: Bit in VCA2 register
VCA27
+
-
Dec 08, 2006
(Filter width: 200 ns)
Noise filter
Block Diagram of Voltage Monitor 2 Interrupt / Reset Generation Circuit
Watchdog timer
underflow signal
Voltage detection 2 signal
is held “H” when VCA27 bit
is set to 0 (disabled).
Page 46 of 315
fRING-S
Voltage
detection
2 signal
VCA13
Voltage monitor 2 interrupt/reset generation circuit
This bit is set to 0 (not detected) by writing
0 by a program.
VW2C3
1/2
1/2
VW2C7
VW2F1 to VW2F0
1/2
VW2C1
= 00b
= 01b
= 10b
= 11b
Digital
Filter
VW2C2 bit is set to 0 (not detected)
by writing 0 by a program.
When VCA27 bit is set to 0 (voltage
detection 2 circuit disabled), VW2C2
bit is set to 0.
VW2C0
VW2C6
VW2C2
7. Voltage Detection Circuit
Voltage monitor 2
interrupt signal
Oscillation stop
timer interrupt
interrupt signal
Watchdog
detection
signal
Non-maskable
interrupt signal
Voltage
monitor 2
reset signal