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R5F21143DSP View Datasheet(PDF) - Renesas Electronics

Part NameR5F21143DSP Renesas
Renesas Electronics Renesas
DescriptionR8C/14 Group, R8C/15 Group SINGLE-CHIP 16-BIT CMOS MICROCOMPUTER
R5F21143DSP Datasheet PDF : 277 Pages
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R8C/14 Group, R8C/15 Group
6. Voltage Detection Circuit
Voltage Monitor 2 Interrupt / Reset Generation Circuit
Voltage Detection 2 Circuit
VCA27
fRING-S
VCC +
Internal -
Reference
voltage
VCA13
Noise Filter
(Filter Width: 200ns)
Voltage
Detection
2 signal
Voltage detection 2 signal
is held “H” when VCA27 bit
is set to “0” (disabled)
Watchdog Timer Block
Watchdog Timer
Underflow Signal
VW2F1 to VW2F0
=00b
=01b
=10b
1/2 1/2 1/2 =11b
VW2C2 bit is set to “0” (not detected)
by writing “0” by program.
When VCA27 bit is set to “0” (voltage
detection 2 circuit disabled), VW2C2
bit is set to “0”
Digital
Filter
VW2C2
Watchdog
Timer Interrupt
Signal
VW2C1
VW2C3
VW2C7
This bit is set to “0” (not detected) by writing
“0” by program.
VW2C0
VW2C6
Voltage Monitor 2
Interrupt Signal
Oscillation Stop
Detection
Interrupt Signal
VW2C0 to VW2C3, VW2F2, VW2F1, VW2C6, VW2C7: Bits in VW2C register
VCA13: Bit in VCA1 register
VCA27: Bit in VCA2 register
Non-Maskable
Interrupt Signal
Voltage
Monitor 2
Reset
Signal
Figure 6.3 Block Diagram of Voltage Monitor 2 Interrupt / Reset Generation Circuit
Rev.2.10 Jan 19, 2006 Page 27 of 253
REJ09B0164-0210
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 Overview
This MCU is built using the high-performance silicon gate CMOS process using a R8C/Tiny Series CPU core and is packaged in a 20-pin plastic molded LSSOP. This MCU operates using sophisticated instructions featuring a high level of instruction efficiency. With 1 Mbyte of address space, it is capable of executing instructions at high speed. Furthermore, the data flash ROM (1KB × 2blocks) is embedded in the R8C/15 group.
The difference between R8C/14 and R8C/15 groups is only the existence of the data flash ROM. Their peripheral functions are the same.

 Applications
Electric household appliance, office equipment, housing equipment (sensor, security), general industrial equipment, audio, etc.

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