參數(shù)資料
型號(hào): DM164134
廠商: Microchip Technology
文件頁數(shù): 53/116頁
文件大?。?/td> 0K
描述: KIT DEV PIC18F4XK22
標(biāo)準(zhǔn)包裝: 1
系列: PIC® 18F
類型: MCU
適用于相關(guān)產(chǎn)品: PIC18F4XK22,PIC18F2XK22
所含物品: 板,文檔
2006 Microchip Technology Inc.
DS41159E-page 39
PIC18FXX8
REGISTER 4-1:
STKPTR: STACK POINTER REGISTER
FIGURE 4-3:
RETURN ADDRESS STACK AND ASSOCIATED REGISTERS
R/C-0
U-0
R/W-0
STKFUL
STKUNF
SP4
SP3
SP2
SP1
SP0
bit 7
bit 0
bit 7
STKFUL: Stack Full Flag bit
1
= Stack became full or overflowed
0
= Stack has not become full or overflowed
bit 6
STKUNF: Stack Underflow Flag bit
1
= Stack underflow occurred
0
= Stack underflow did not occur
bit 5
Unimplemented: Read as ‘0’
bit 4-0
SP4:SP0: Stack Pointer Location bits
Note:
Bit 7 and bit 6 need to be cleared following a stack underflow or a stack overflow.
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
‘1’ = Bit is set
‘0’ = Bit is cleared
C = Clearable bit
00011
001A34h
11111
11110
11101
00010
00001
00000(1)
00010
Return Address Stack
Top-of-Stack
000D58h
TOSL
TOSH
TOSU
34h
1Ah
00h
STKPTR<4:0>
000000h
Note 1: No RAM associated with this address; always maintained ‘0’s.
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