参数资料
型号: R5F21174DSP
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 20 MHz, MICROCONTROLLER, PDSO20
封装: 4.40 X 6.50 MM, 0.65 MM PITCH, PLASTIC, LSSOP-20
文件页数: 17/38页
文件大小: 671K
代理商: R5F21174DSP
R8C/16 Group, R8C/17 Group
5. Electrical Characteristics
Rev.2.00
Jan 30, 2006
Page 24 of 35
REJ03B0101-0200
NOTES:
1.
This condition is not applicable when using with Vcc
≥ 1.0V.
2.
When turning power on after the time to hold the external power below effective voltage (Vpor1) exceeds10s, refer to Table
3.
tw(por2) is time to hold the external power below effective voltage (Vpor2).
NOTES:
1.
When not using the voltage monitor 1 reset, use with Vcc
≥ 2.7V.
2.
tw(por1) is time to hold the external power below effective voltage (Vpor1).
Figure 5.3
Reset Circuit Electrical Characteristics
Table 5.8
Reset Circuit Electrical Characteristics (When Using Voltage Monitor 1 Reset )
Symbol
Parameter
Condition
Standard
Unit
Min.
Typ.
Max.
Vpor2
Power-On Reset Valid Voltage
-20
°C ≤ Topr < 85°C
Vdet1
V
tw(Vpor2-Vdet1) Supply Voltage Rising Time When Power-On Reset is
Deasserted(1)
-20
°C ≤ Topr < 85°C,
tw(por2)
≥ 0s(3)
100
ms
Table 5.9
Reset Circuit Electrical Characteristics (When Not Using Voltage Monitor 1 Reset)
Symbol
Parameter
Condition
Standard
Unit
Min.
Typ.
Max.
Vpor1
Power-On Reset Valid Voltage
-20
°C ≤ Topr < 85°C
0.1
V
tw(Vpor1-Vdet1)
Supply Voltage Rising Time When Power-On Reset is
Deasserted
0
°C ≤ Topr ≤ 85°C,
tw(por1)
≥ 10s(2)
100
ms
tw(Vpor1-Vdet1)
Supply Voltage Rising Time When Power-On Reset is
Deasserted
-20
°C ≤ Topr < 0°C,
tw(por1)
≥ 30s(2)
100
ms
tw(Vpor1-Vdet1)
Supply Voltage Rising Time When Power-On Reset is
Deasserted
-20
°C ≤ Topr < 0°C,
tw(por1)
≥ 10s(2)
1ms
tw(Vpor1-Vdet1)
Supply Voltage Rising Time When Power-On Reset is
Deasserted
0
°C ≤ Topr ≤ 85°C,
tw(por1)
≥ 1s(2)
0.5
ms
NOTES:
1. Hold the voltage of the microcomputer operation voltage range (Vccmin or above) within sampling time.
2. A sampling clock can be selected. Refer to 6. Voltage Detection Circuit of Hardware Manual for details.
3. Vdet1 indicates the voltage detection level of the voltage detection 1 circuit. Refer to 6. Voltage Detection Circuit of
Hardware Manual for details.
Vdet1(3)
Vpor1
Internal Reset
Signal
(“L” Valid)
tw(por1)
tw(Vpor1–Vdet1)
Sampling Time(1, 2)
Vdet1(3)
1
fRING-S
× 32
1
fRING-S
× 32
Vpor2
Vccmin
tw(por2) tw(Vpor2–Vdet1)
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