Atmel AT90S8414 Manuals

Manuals and User Guides for Atmel AT90S8414. We have 1 Atmel AT90S8414 manual available for free PDF download: Manual

Atmel AT90S8414 Manual (87 pages)

Brand: Atmel | Category: Motherboard | Size: 8 MB

Table of Contents
1
Pin Configurations
5
Block Diagram
6
Description
7
Pin Descriptions
8
Crystal Oscillator
9
At90S8414 Avr Risc Microcontroller Cpu
10
Architectural Overview
10
The General Purpose Register File
12
The X-Register, Y-Register and Z-Register
13
The ALU - Arithmetic Logic Unit
13
The Downloadable Flash Program Memory
13
The SRAM Data Memory - Internal and External
14
The Program and Data Addressing Modes
15
REGISTER DIRECT, SINGLE REGISTER Rd
15
REGISTER DIRECT, TWO REGISTERS Rd and Rr
15
I/O Direct
16
Sram Direct
16
Sram Direct with Displacement
16
Sram/Register Indirect
17
Sram/Register Indirect with Pre-Decrement
17
Sram/Register Indirect with Post-Increment
17
Constant Addressing Using the Lpm Instruction
18
Direct Program Address, Jmp and Call
18
Indirect Program Addressing, Ijmp and Icall
18
Relative Program Addressing, Rjmp and Rcall
19
The EEPROM Data Memory
19
Memory Access Times and Instruction Execution Timing
19
I/O Memory
22
The Status Register - Sreg
23
The Stack Pointer - Sp
24
Reset and Interrupt Handling
24
Reset Sources
25
Power-On Reset
26
External Reset
27
Watchdog Reset
27
Interrupt Handling
28
The General Interrupt Mask Register - Gimsk
28
The Timer/Counter Interrupt Mask Register - Timsk
29
The Timer/Counter Interrupt Flag Register - Tifr
29
External Interrupts
30
Interrupt Response Time
31
Mcu Control Register - Mcucr
31
Sleep Modes
32
Idle Mode
33
Power down Mode
33
Timer / Counters
33
The Timer/Counter Prescaler
33
The 8-Bit Timer/Counter0
34
The Timer/Counter0 Control Register - Tccr0
35
The Timer Counter 0 - Tcnt0
36
The Output Compare Register 0 - Ocr0
36
The 16-Bit Timer/Counter1
36
The Timer/Counter1 Control Register a - Tccr1A
39
The Timer/Counter1 Control Register B - Tccr1B
39
The Timer/Counter1 - Tcnt1H and Tcnt1L
40
Timer/Counter1 Output Compare Register - Ocr1Ah and Ocr1Al
41
Timer/Counter1 Output Compare Register - Ocr1Bh and Ocr1Bl
41
The Timer/Counter1 Input Capture Register - Icr1H and Icr1L
42
Timer/Counter1 in Pwm Mode
42
The Watchdog Timer
43
The Watchdog Timer Control Register - Wdtcr
44
Eeprom Read/Write Access
44
The Eeprom Address Register - Eear
45
The Eeprom Data Register - Eedr
45
The Eeprom Control Register - Eecr
45
The Serial Peripheral Interface - Spi
46
The Spi Control Register - Spcr
48
The Spi Status Register - Spsr
49
The Spi Data Register - Spdr
50
The Uart
50
Data Transmission
50
Data Reception
52
UART Control
53
The Uart I/O Data Register - Udr
53
The Uart Status Register - Usr
53
The Uart Control Register - Ucr
54
The Baud Rate Generator
55
The Uart Baud Rate Register - Ubrr
56
The Analog Comparator
57
The Analog Comparator Control and Status Register - Acsr
57
I/O-Ports
58
Port a
58
The Port a Data Register - Porta
59
The Port a Data Direction Register - Ddra
59
The Port a Input Pins Address - Pina
59
Porta as General Digital I/O
59
Port a Schematics
60
Port B
60
The Port B Data Register - Portb
61
The Port B Data Direction Register - Ddrb
61
The Port B Input Pins Address - Pinb
61
Portb as General Digital I/O
61
Alternate Functions for Portb
62
Port B Schematics
63
Port C
66
The Port C Data Register - Portc
66
The Port C Data Direction Register - Ddrc
67
The Port C Input Pins Address - Pinc
67
Portc as General Digital I/O
67
Port C Schematics
67
Port D
69
The Port D Data Register - Portd
69
The Port D Data Direction Register - Ddrd
69
The Port D Input Pins Address - Pind
69
Portd as General Digital I/O
70
Alternate Functions for Portd
70
Portd Schematics
71
Memory Programming
74
Program Memory Lock Bits
74
Programming the Flash and EEPROM
75
Parallel Programming
75
Serial Downloading
75
Serial Programming Algorithm
76
Programming Characteristics
79
Absolute Maximum Ratings
79
D.C. Characteristics
80
External Data Memory Read Cycle
81
External Memory Write Cycle
82
Xternal Clock Drive Waveforms
82
External Clock Drive
82
Ordering Information
83
At90S8414 Register Summary
84
At90S8414 Instruction Set Summary
85

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