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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
5. Reset
5. Reset
There are resets: hardware reset, power-on reset, voltage monitor 1 reset, voltage monitor 2 reset,
watchdog timer reset and software reset. Table 5.1 lists the Reset Name and Factor.
Table 5.1 Reset Name and Factor
Reset Name
Factor
Hardware Reset
Power-On Reset
Voltage Monitor 1 Reset
Voltage Monitor 2 Reset
Watchdog Timer Reset
Software Reset
Input voltage of RESET pin is held “L”
VCC rises
VCC falls (monitor voltage : Vdet1)
VCC falls (monitor voltage : Vdet2)
Underflow of watchdog timer
Write “1” to PM03 bit in PM0 register
RESET
VCC
Hardware Reset
Power-On
Reset Circuit
Power-On Reset
SFR
VCA26,
VW1C0 and
VW1C6 bits
Voltage
Detection
Circuit
Voltage Monitor 1 Reset
Voltage Monitor 2 Reset
Watchdog
Timer
Watchdog Timer
Reset
CPU
Software Reset
SFR
VCA13, VCA27,
VW1C1, VW1C2,
VW1F0, VW1F1, VW1C7,
VW2C2 and VW2C3 bits
Pin, CPU and
SFR other than
above
Figure 5.1
VCA13 : Bit in VCA1 register
VCA26, VCA27 : Bits in VCA2 register
VW1C0 to VW1C2, VW1F0, VW1F1, VW1C6, VW1C7 : Bits in VW1C register
VW2C2, VW2C3 bits : Bits in VW2C register
Block Diagram of Reset Circuit
Rev.2.10 Jan 19, 2006 Page 19 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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