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參數(shù)資料
| 型號(hào)： | MC68HC05V7 |
| 廠商： | Motorola, Inc. |
| 英文描述： | 8-Bit Microcontroller Units (MCU).(8位微控制器) |
| 中文描述： | 8位微控制器單元（MCU）。（8位微控制器） |
| 文件頁數(shù)： | 13/16頁 |
| 文件大小： | 295K |
| 代理商： | MC68HC05V7 |
AN1257/D
MOTOROLA
13
Figure 7. Standby Mode Entry Flowchart
A
MCU COMPLETES
INITIALIZATION ROUTINE
FOLLOWING POWER-UP
IS
IGNS BIT IN MISC
REGISTER = 0
NO
YES
MCU PERFORMS NORMAL
APPLICATION OPERATIONS
HAS J1850
BUS ACTIVITY
HALTED
NO
YES
THE MISC REGISTER
A
PRIMARY REGULATOR
ENTERS STANDBY MODE;
V
DD
/V
SSD
CLAMP ENGAGED
PRIMARY REGULATOR
OUTPUT AT V
PINS
BEGINS TO DROP
IS
V
DD
< V
LVRI
LVR CIRCUIT ASSERTS
RESET INTERNALLY
NO
YES
MCU ENTERS UNKNOWN STATE;
SECONDARY REGULATOR
REMAINS ENABLED
NO
YES
PRIMARY REGULATOR WAITS
FOR STIMULUS TO EXIT
STANDBY MODE
VOLTAGE OUTPUT AT V
PINS CONTINUES TO DROP
TOWARD V
SSD
IS
V
DD
< MINIMUM
FOR MCU
OPERATION
A
AAAAAAA
A
A
A
A
A
A
A
A
A
A
A
AAAAAAA
AAAAAAA
A
A
A
A
A
A
A
A
A
A
A
A
mode.
Area within dotted line delineates user
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