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參數(shù)資料
| 型號： | UPD754244GS |
| 廠商： | NEC Corp. |
| 英文描述： | 4-BIT SINGLE-CHIP MICROCONTROLLERS |
| 中文描述： | 4位單晶片微控制器 |
| 文件頁數(shù)： | 4/88頁 |
| 文件大?。?/td> | 416K |
| 代理商： | UPD754244GS |
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4
μ
PD754144, 754244
CONTENTS
1.
PIN CONFIGURATION (TOP VIEW) ....................................................................................................6
2.
BLOCK DIAGRAM................................................................................................................................8
3.
PIN FUNCTION .....................................................................................................................................9
3.1
Port Pins ......................................................................................................................................9
3.2
Non-port Pins ............................................................................................................................10
3.3
Pin Input/Output Circuits .........................................................................................................11
3.4
Recommended Connection of Unused Pins ..........................................................................12
4.
SWITCHING FUNCTION BETWEEN MK I MODE AND MK II MODE ...............................................13
4.1
Difference between Mk I and Mk II Modes ..............................................................................13
4.2
Setting Method of Stack Bank Select Register (SBS) ...........................................................14
5.
MEMORY CONFIGURATION .............................................................................................................15
6.
EEPROM .............................................................................................................................................18
7.
PERIPHERAL HARDWARE FUNCTIONS .........................................................................................19
7.1
Digital Input/Output Ports ........................................................................................................19
7.2
Clock Generator ........................................................................................................................19
7.3
Basic Interval Timer/Watchdog Timer.....................................................................................22
7.4
Timer Counter ...........................................................................................................................23
7.5
Programmable Threshold Port (Analog Input Port)...............................................................27
7.6
Bit Sequential Buffer ....... 16 Bits............................................................................................28
8.
INTERRUPT FUNCTION AND TEST FUNCTION ..............................................................................29
9.
STANDBY FUNCTION........................................................................................................................31
10. RESET FUNCTION .............................................................................................................................32
10.1 Configuration and Operation Status of RESET Function .....................................................32
10.2 Watchdog Flag (WDF), Key Return Flag (KRF) ......................................................................36
11. MASK OPTION ...................................................................................................................................38
12. INSTRUCTION SETS..........................................................................................................................39
13. ELECTRICAL SPECIFICATIONS ......................................................................................................48
13.1
μ
PD754144 .................................................................................................................................48
13.2
μ
PD754244 .................................................................................................................................56
14. CHARACTERISTICS CURVES (REFERENCE VALUES) .................................................................67
14.1
μ
PD754144 .................................................................................................................................67
14.2
μ
PD754244 .................................................................................................................................69
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