參數(shù)資料
型號(hào): R5F212F4DXXXFP
元件分類(lèi): 微控制器/微處理器
英文描述: 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PQFP32
封裝: 7 X 7 MM, 0.80 MM PITCH, PLASTIC, LQFP-32
文件頁(yè)數(shù): 22/41頁(yè)
文件大小: 332K
代理商: R5F212F4DXXXFP
R8C/2E Group, R8C/2F Group
5. Electrical Characteristics
Rev.1.00
Dec 14, 2007
Page 29 of 39
REJ03B0222-0100
NOTES:
1.
The measurement condition is Topr =
20 to 85°C (N version) / 40 to 85°C (D version), unless otherwise specified.
2.
This condition (external power VCC rise gradient) does not apply if VCC
≥ 1.0 V.
3.
tw(por1) indicates the duration the external power VCC must be held below the effective voltage (Vpor1) to enable a power on
reset. When turning on the power for the first time, maintain tw(por1) for 30 s or more if
20°C ≤ Topr ≤ 85°C, maintain tw(por1) for
3,000 s or more if
40°C ≤ Topr < 20°C.
Figure 5.3
Reset Circuit Electrical Characteristics
Table 5.10
Power-on Reset Circuit, Voltage Monitor 0 Reset Electrical Characteristics
Symbol
Parameter
Condition
Standard
Unit
Min.
Typ.
Max.
Vpor1
Power-on reset valid voltage(3)
0.1
V
Vpor2
Power-on reset valid voltage
0
2.6
V
trth
External power VCC rise gradient(2)
20
mV/msec
NOTES:
1. Ensure that the voltage is 2.2 V or above during the sampling time.
2. The sampling time is fOCO-S divided by 1
× 4 cycles.
max. 2.6 V
Vpor1
Internal
reset signal
(“L” valid)
tw(por1)
Sampling time(1, 2)
max. 2.6 V
1
fOCO-S
× 32
1
fOCO-S
× 32
Vpor2
2.2 V
External
Power VCC
trth
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