參數(shù)資料
型號: MSM64P155-NGS-BK
廠商: OKI ELECTRIC INDUSTRY CO LTD
元件分類: 微控制器/微處理器
英文描述: 4-BIT, OTPROM, 0.035 MHz, MICROCONTROLLER, PQFP100
封裝: QFP-100
文件頁數(shù): 14/61頁
文件大小: 274K
代理商: MSM64P155-NGS-BK
2-3
2.3
Logic Power Supply and Backup Circuits
MSM64P155 has no built-in logic power supply constant voltage (VR) or backup circuits.
Internal logic is driven by the VDD1 level both for the 1.5V option and 3.0V option. The
backup controller register (BUPCON) is identical to MSM64155A, it enables both
reading and writing, and the 0 bit (BUPF) of the backup controller register (BUPCON) has
no influence on the logic power source.
2.3.1
Configuration of the Logic Power Supply
Figure 2-2 shows the configuration of driving circuits of the logic power supply.
Figure 2-2 Logic Power Supply Driving Circuits
VDDL
VSS
Logic circuit
MSM64P155 (1.5V option)
VDD1
VSS
Ca
1.5V
VDDL
VSS
Logic circuit
MSM64P155L (3.0V option)
VDD1
VSS
Ca
3.0V
VDD2
Cb
Bias generating circuit (+1.5V)
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