參數(shù)資料
型號: UPD17242UC-XXX-5A4
元件分類: 微控制器/微處理器
英文描述: 4-BIT, MROM, 4.5 MHz, MICROCONTROLLER, PDSO30
封裝: 0.300 INCH, PLASTIC, SSOP-30
文件頁數(shù): 12/102頁
文件大?。?/td> 953K
代理商: UPD17242UC-XXX-5A4
17
Data Sheet U15002EJ1V1DS
PD17240, 17241, 17242, 17243, 17244, 17245, 17246
Contents of Program Counter (PC)
Note
SGR
1
0
b12
0
1
0
b11
0
1
0
1
0
b10
0
b9
0
b8
0
b7
0
b6
0
b5
0
b4
0
b3
0
b2
0
b1
0
b0
0
Program Counter
Instruction
BR addr
CALL addr
SYSCAL entry
BR @AR
CALL @AR
MOVT DBF, @AR
RET
RETSK
RETI
Other instructions
(including skip instruction)
On acknowledging interrupt
Watchdog timer reset,
RESET pin,
reset by stack pointer
Page 0
Page 1
Page 2
Page 3
entryL
entryH
Operand of instruction (addr)
Contents of address register
Re-
tained
Re-
tained
Contents (return address) of address stack register (ASR)
specified by stack pointer (SP)
Vector address of each interrupt
Increment
Re-
tained
Figure 2-3. Value of Program Counter on Execution of Each Instruction
Note
PD17240:
b0 to b10
PD17241:
b0 to b11
PD17242, 17243:
b0 to b12
PD17244, 17245, 17246: b0 to b12, SGR
Remark
entryH: Higher 3 bits of entry
entryL: Lower 4 bits of entry
Table 2-2. Interrupt Vector Address
Priority
Internal/External
Interrupt Source
Vector Address
1
Internal
8-bit timer
0004H
2
External
Rising and falling edges of INT pin
0003H
3
Internal
Basic interval timer
0002H
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