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參數(shù)資料
| 型號(hào)： | IS80LV32 |
| 廠商： | Integrated Silicon Solution, Inc. |
| 英文描述： | CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER |
| 中文描述： | CMOS單芯片低電壓8位微控制器 |
| 文件頁數(shù)： | 7/48頁 |
| 文件大?。?/td> | 408K |
| 代理商： | IS80LV32 |
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IS80LV52
IS80LV32
Integrated Silicon Solution, Inc. — 1-800-379-4774
ADVANCE INFORMATION
MC019-0A
10/01/98
7
ISSI
OPERATING DESCRIPTION
The detail description of the IS80LV52/32 included in this
description are:
Memory Map and Registers
Timer/Counters
Serial Interface
Interrupt System
Other Information
MEMORY MAP AND REGISTERS
Memory
The IS80LV52/32 has separate address spaces for program
and data memory. The program and data memory can be
up to 64K bytes long. The lower 8K program memory can
reside on-chip. (IS80LV52 only) Figure 5 shows a map of
the IS80LV52/32 program and data memory.
The IS80LV52/32 has 256 bytes of on-chip RAM, plus
numbers of special function registers. The lower 128 bytes
can be accessed either by direct addressing or by indirect
addressing. The upper 128 bytes can be accessed by
indirect addressing only. Figure 6 shows internal data
memory organization and SFR Memory Map.
The lower 128 bytes of RAM can be divided into three
segments as listed below and shown in Figure 7.
1.
Register Banks 0-3:
locations 00H through 1FH
(32 bytes). The device after reset defaults to register
bank 0. To use the other register banks, the user must
select them in software. Each register bank contains
eight 1-byte registers R0-R7. Reset initializes the
stack point to location 07H, and is incremented once
to start from 08H, which is the first register of the
second register bank.
2.
Bit Addressable Area:
16 bytes have been assigned
for this segment 20H-2FH. Each one of the 128 bits of
this segment can be directly addressed (0-7FH).
Each of the 16 bytes in this segment can also be
addressed as a byte.
3.
Scratch Pad Area:
30H-7FH are available to the
user as data RAM. However, if the data pointer has
been initialized to this area, enough bytes should be
left aside to prevent SP data destruction.
FFFFH:
64K
1FFFH:
8K
Program Memory
(Read Only)
Data Memory
(Read/Write)
EA = 0
External
PSEN
EA = 1
Internal
(IS80C52
Only)
0000
00
FFFFH:
External
Internal
FFH:
0000
RD WR
Figure 5. IS80LV52/32 Program and Data Memory Structure
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| IS80LV32-24PL | CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER |
| IS80LV32-24PLI | CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER |
| IS80LV32-24PQ | CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER |
| IS80LV32-24PQI | CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER |
| IS80LV32-24W | CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| IS80LV32-24PL | 制造商:ISSI 制造商全稱:Integrated Silicon Solution, Inc 功能描述:CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER |
| IS80LV32-24PLI | 制造商:ISSI 制造商全稱:Integrated Silicon Solution, Inc 功能描述:CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER |
| IS80LV32-24PQ | 制造商:ISSI 制造商全稱:Integrated Silicon Solution, Inc 功能描述:CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER |
| IS80LV32-24PQI | 制造商:ISSI 制造商全稱:Integrated Silicon Solution, Inc 功能描述:CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER |
| IS80LV32-24W | 制造商:ISSI 制造商全稱:Integrated Silicon Solution, Inc 功能描述:CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER |
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