參數(shù)資料
型號(hào)： IS89C52-40PQI
廠商： INTEGRATED SILICON SOLUTION INC
元件分類： 微控制器/微處理器
英文描述： CMOS SINGLE CHIP 8-BIT MICROCONTROLLER with 8-Kbytes of FLASH
中文描述： 8-BIT, FLASH, 40 MHz, MICROCONTROLLER, PQFP44
封裝： PLASTIC, QFP-44
文件頁(yè)數(shù)： 7/50頁(yè)
文件大?。?/td> 425K
代理商： IS89C52-40PQI
IS89C52
Integrated Silicon Solution, Inc. — 1-800-379-4774
MC013-1C
11/21/98
7
ISSI
OPERATING DESCRIPTION
The detail description of the IS89C52 included in this
description are:
Memory Map and Registers
Timer/Counters
Serial Interface
Interrupt System
Other Information
Flash Memory
MEMORY MAP AND REGISTERS
Memory
The IS89C52 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. Figure 5 shows a map of the IS89C52
program and data memory.
The IS89C52 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. 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
0000
00
FFFFH:
External
Internal
FFH:
0000
RD WR
Figure 5. IS89C52 Program and Data Memory Structure
相關(guān)PDF資料
PDF描述
IS89C52-40W CMOS SINGLE CHIP 8-BIT MICROCONTROLLER with 8-Kbytes of FLASH
IS89C52-40WI CMOS SINGLE CHIP 8-BIT MICROCONTROLLER with 8-Kbytes of FLASH
IS89C52-12PL RY Series - Econoline Regulated DC-DC Converters; Input Voltage (Vdc): 24V; Output Voltage (Vdc): 05V; Power: 1W; On/Off Pin; 1kVDC Isolation; UL94V-0 Package Material; Optional Continuous Short Circuit Protected; Internal linear regulator; Efficiency to 70%
IS89C52-12PLI ECONOLINE: RY-S_DCP - Internal SMD Technology- 1kVDC Isolation- Short Circuit Protection: Current Limit- UL94V-0 Package Material- Regulated Output- No External Components Required- Efficiency to 63%
IS89C52-12PQ RY Series - Econoline Regulated DC-DC Converters; Input Voltage (Vdc): 24V; Output Voltage (Vdc): 05V; Power: 1W; On/Off Pin; 1kVDC Isolation; UL94V-0 Package Material; Optional Continuous Short Circuit Protected; Internal linear regulator; Efficiency to 70%
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
IS89C52-40W 制造商:ISSI 制造商全稱:Integrated Silicon Solution, Inc 功能描述:CMOS SINGLE CHIP 8-BIT MICROCONTROLLER with 8-Kbytes of FLASH
IS89C52-40WI 制造商:ISSI 制造商全稱:Integrated Silicon Solution, Inc 功能描述:CMOS SINGLE CHIP 8-BIT MICROCONTROLLER with 8-Kbytes of FLASH
IS89D 制造商:IDEC CORPORATION 功能描述:SENS.IND. 2W/F 24-23VAC NO
IS89DK 制造商:IDEC CORPORATION 功能描述:SENS.IND. 2W/F 24-230VAC NO
IS89DL 制造商:IDEC CORPORATION 功能描述:SENS.IND. 2W/F 24-230VAC NO
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