AT87251G2D-3CSUM【PDF 15/77 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

11页 12页 13页 14页 [15页]16页 17页 18页 19页

AT/TSC8x251G2D

4135F–8051–11/06

Table 16.

Notation for Immediate Addressing

Table 17.

Notation for Bit Addressing

Table 18.

Notation for Destination in Control Instructions

Immediate

Address

Description

C251

C51

#data

An 8-bit constant that is immediately addressed in an instruction

#data16

A 16-bit constant that is immediately addressed in an instruction

–

#0data16

#1data16

A 32-bit constant that is immediately addressed in an instruction. The

upper word is filled with zeros (#0data16) or ones (#1data16).

3–

#short

A constant, equal to 1, 2, or 4, that is immediately addressed in an

instruction.

3–

Direct

Address

Description

C251

C51

bit51

A directly addressed bit (bit number = 00h-FFh) in memory or an

SFR. Bits 00h-7Fh are the 128 bits in byte locations 20h-2Fh in the

on-chip RAM. Bits 80h-FFh are the 128 bits in the 16 SFRs with

addresses that end in 0h or 8h, S:80h, S:88h, S:90h,..., S:F0h,

S:F8h.

–

bit

A directly addressed bit in memory locations 00:0020h-00:007Fh or

in any defined SFR.

Direct

Address

Description

C251

C51

rel

A signed (two’s complement) 8-bit relative address. The destination

is -128 to +127 bytes relative to the next instruction’s first byte.

addr11

An 11-bit target address. The target is in the same 2-Kbyte block of

memory as the next instruction’s first byte.

–3

addr16

A 16-bit target address. The target can be anywhere within the same

64-Kbyte region as the next instruction’s first byte.

–3

addr24

A 24-bit target address. The target can be anywhere within the 16-

Mbyte address space.

3–

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