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AT90S2313
Atmel AT90S2313 User Manual
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AT9
0S23
13
55
Figure 46.
Por
t D Sche
matic
Diagram
(Pins P
D2 and
PD3)
Figure 47.
Por
t D Sche
matic
Diagram
(Pins P
D4 and
PD5)
DA
T
A BUS
D
D
Q
Q
RESET
RESET
C
C
WD
WP
RD
MOS
PULL-
UP
PDn
R
R
WP:
WD:
RL:
RP:
RD:
n:
m:
WRITE PORTD
WRITE DDRD
READ PORTD LA
TCH
READ PORTD PIN
READ DDRD
4, 5
0, 1
DDDn
PORTDn
SENSE CONTROL
TIMERm CLOCK
SOURCE MUX
CSm2
CSm0
RL
RP
CSm1
54
56
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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