AT87251G2D-3CSUM【PDF 33/77 页】IC 8051 MCU 32K OTP 24MHZ 40DIP

收藏本站

您好，
买卖IC网欢迎您。
请登录
免费注册

买卖IC网

Sheet目录3833

29页 30页 31页 32页 [33页]34页 35页 36页 37页

AT/TSC8x251G2D

4135F–8051–11/06

Table 32.

Summary of Call and Return Instructions

Notes: 1. A shaded cell denotes an instruction in the C51 Architecture.

2. In internal execution only, add 1 to the number of states if the destination/return

address is internal and odd.

3. Add 2 to the number of states if the destination address is external.

4. Add 5 to the number of states if INTR = 1.

Absolute callACALL <src>(PC)

← (PC) +2; push (PC)15:0;

(PC)10:0 ← src opnd

Extended callECALL <src>(PC)

← (PC) + size (instr); push (PC)23:0;

(PC)23:0 ← src opnd

Long callLCALL <src>(PC)

← (PC) + size (instr); push (PC)15:0;

(PC)15:0 ← src opnd

Return from subroutineRETpop (PC)15:0

Extended return from subroutineERETpop (PC)23:0

Return from interruptRETIIF [INTR = 0] THEN pop (PC)15:0

IF [INTR = 1] THEN pop (PC)23:0; pop (PSW1)

Trap interruptTRAP(PC)

← (PC) + size (instr);

IF [INTR = 0] THEN push (PC)15:0

IF [INTR = 1] THEN push (PSW1); push (PC)23:0

Mnemonic

<dest>,

<src>

(1)

Comments

Binary Mode

Source Mode

Bytes

States

Bytes

States

ACALL

addr11

Absolute subroutine call

9(2)(3)

29(2)(3)

ECALL

at DRk

Extended subroutine call (indirect)

14(2)(3)

213(2)(3)

addr24

Extended subroutine call

14(2)(3)

413(2)(3)

LCALL

at WRj

Long subroutine call (indirect)

10(2)(3)

29(2)(3)

addr16

Long subroutine call

9(2)(3)

39(2)(3)

RET

Return from subroutine

7(2)

17(2)

ERET

Extended subroutine return

9(2)

28(2)

RETI

Return from interrupt

7(2)(4)

17(2)(4)

TRAP

Jump to the trap interrupt vector

12(4)

111(4)

发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

*型号	*数量	厂商	批号	封装

添加更多采购

采购需求

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

我的联系方式