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Atmel AT90S2313 User Manual
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AT9
0S23
13
11
I/O Direct
Figure 11.
I/O Dir
ect Ad
dres
sing
Operand ad
dress i
s co
ntained i
n 6 bits o
f the in
structi
on word. n
is the de
stina
tion or s
ource reg
ister ad
dress.
Data Direct
Figure 12.
Direct Da
ta Addressing
A 16-bit Data Address
is contained
in the 16 LSBs of a
two-word instructio
n. Rd/Rr specify the destination o
r source
registe
r.
10
12
Table of Contents
Pin Descriptions
3
Crystal Oscillator
4
Architectural Overview
5
General Purpose Register File
7
ALU - Arithmetic Logic Unit
8
In-System Programmable Flash Program Memory
8
EEPROM Data Memory
8
SRAM Data Memory
9
Program and Data Addressing Modes
10
Memory Access and Instruction Execution Timing
15
Reset and Interrupt Handling
19
Sleep Modes
27
Timer/Counter Prescaler
28
Watchdog Timer
36
EEPROM Read/Write Access
37
Prevent EEPROM Corruption
39
Data Transmission
39
Data Reception
41
UART Control
42
Analog Comparator
45
Memory Programming
56
Program and Data Memory Lock Bits
56
Signature Bytes
57
Programming the Flash and EEPROM
57
Parallel Programming
57
Parallel Programming Characteristics
64
Serial Downloading
65
Serial Programming Characteristics
68
Electrical Characteristics
69
Absolute Maximum Ratings
69
External Clock Drive Waveforms
71
External Clock Drive
71
Typical Characteristics
71
Register Summary
82
Instruction Set Summary
83
Ordering Information
85
Packaging Information
86
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Atmel AT90S2313 Specifications
General
Brand
Atmel
Model
AT90S2313
Category
Microcontrollers
Language
English
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