參數(shù)資料
型號: MB91F249PFV-GSE1
廠商: FUJITSU LTD
元件分類: 微控制器/微處理器
英文描述: 32-BIT, FLASH, 32 MHz, RISC MICROCONTROLLER, PQFP144
封裝: 20 X 20 MM, 1.70 MM HEIGHT, 0.50 MM PITCH, PLASTIC, LQFP-144
文件頁數(shù): 62/84頁
文件大?。?/td> 2105K
代理商: MB91F249PFV-GSE1
MB91245/S Series
DS07-16803-3E
65
(3) Power-on Conditions
(TA : Recommended operating conditions; VSS
= 0.0 V)
Power supply drop time, power supply voltages and external reset input to retain RAM data in MB91245/S series.
Satisfy the following reset input standard to retain the RAM data used in the single chip mode.
Parameter
Symbol Pin name
Condi-
tion
Value
Unit
Remarks
Min
Max
Power supply rising
time
tR
Vcc
0.05
30
ms
Power supply start
voltage
VOFF
0.2
V
Power supply peak
voltage
VON
3.5
V
Power supply cut-off
time
tOFF
50
ms
Due to repetitive
operation
Vcc (V)
Voltage drop time
External reset input standard (INIT)
4.0 V
→ 3.5 V dropped
Min 256 tcp
Vcc
0.2 V
4.5 V
tR
tOFF
256 tcp
INIT
Vcc
4 V
3.5 V
To retain RAM data, enter 256 tcp of INIT or more before dropping VCC to 3.5 V or lower.
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