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SAB80515 Datasheet(PDF) 3 Page - Siemens Semiconductor Group

Part # SAB80515
Description  8-Bit Single-Chip Microcontroller Family
Download  270 Pages
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Manufacturer  SIEMENS [Siemens Semiconductor Group]
Direct Link  http://www.siemens.com/
Logo SIEMENS - Siemens Semiconductor Group

SAB80515 Datasheet(HTML) 3 Page - Siemens Semiconductor Group

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Contents
Contents
Page
Semiconductor Group
3
1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2
Fundamental Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
2.1
Differences between MYMOS (SAB 80515/80535) and
ACMOS (SAB 80C515/80C535) Versions . . . . . . . . . . . . . . . . . . . . . . . . . . .13
2.1.1
Power Saving Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
2.1.2
Special Function Register PCON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
2.1.3
Port Driver Circuitries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
2.1.4
The A/D Converter Input Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
2.1.5
A/D Converter Timings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
2.1.6
The Oscillator and Clock Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
2.1.7
The VBB Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
3
Central Processing Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
3.1
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
3.2
CPU Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
4
Memory Organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.1
Program Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.2
Data Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
4.3
General Purpose Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
4.4
Special Function Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
5
External Bus Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
5.1
Accessing External Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
5.2
PSEN, Program Store Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
5.3
ALE, Address Latch Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
5.4
Overlapping External Data and Program Memory Spaces . . . . . . . . . . . . . .29
6
System Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
6.1
Hardware Reset and Power-Up Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
6.1.1
Reset Function and Circuitries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
6.1.2
Hardware Reset Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
7
On-Chip Peripheral Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
7.1
Parallel I/O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
7.1.1
Port Structures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
7.1.1.1 Digital I/O Port Circuitry (MYMOS/ACMOS) . . . . . . . . . . . . . . . . . . . . . . . . .36
7.1.1.2 MYMOS Port Driver Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
7.1.1.3 ACMOS Port Driver Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
7.1.2
Port 0 and Port 2 Used as Address/Data Bus . . . . . . . . . . . . . . . . . . . . . . . .41
7.1.3
Alternate Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42
7.1.4
Port Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
7.1.4.1 Port Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44


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