Manual
Table Of Contents
- Features
- Pin Configurations
- Description
- Architectural Overview
- General Purpose Register File
- ALU – Arithmetic Logic Unit
- In-System Programmable Flash Program Memory
- SRAM Data Memory
- Program and Data Addressing Modes
- Register Direct, Single Register Rd
- Register Direct, Two Registers Rd and Rr
- I/O Direct
- Data Direct
- Data Indirect with Displacement
- Data Indirect
- Data Indirect with Pre- decrement
- Data Indirect with Post- increment
- Constant Addressing Using the LPM Instruction
- Indirect Program Addressing, IJMP and ICALL
- Relative Program Addressing, RJMP and RCALL
- EEPROM Data Memory
- Memory Access Times and Instruction Execution Timing
- I/O Memory
- Reset and Interrupt Handling
- Reset Sources
- Power-on Reset
- External Reset
- Brown-out Detection
- Watchdog Reset
- MCU Status Register – MCUSR
- Interrupt Handling
- General Interrupt Mask Register – GIMSK
- General Interrupt Flag Register – GIFR
- Timer/Counter Interrupt Mask Register – TIMSK
- Timer/Counter Interrupt Flag Register – TIFR
- External Interrupts
- Interrupt Response Time
- MCU Control Register – MCUCR
- Sleep Modes
- Timer/Counters
- 16-bit Timer/Counter1
- Watchdog Timer
- EEPROM Read/Write Access
- Serial Peripheral Interface – SPI
- UART
- Analog Comparator
- Analog-to-Digital Converter
- I/O Ports
- Memory Programming
- Electrical Characteristics
- External Clock Drive Waveforms
- Typical Characteristics
- Register Summary
- Instruction Set Summary
- Ordering Information
- Packaging Information
- Errata for AT90S/LS4433 Rev. Rev. C/D/E/F
- Data Sheet ChangeLog for AT90S/LS4433
- Table of Contents
ii
AT90S/LS4433
1042G–AVR–09/02
Prescaling ........................................................................................................... 65
ADC Noise Canceler Function............................................................................ 67
Scanning Multiple Channels ............................................................................... 70
ADC Noise Canceling Techniques ..................................................................... 70
ADC Characteristics T
A
=-40°Cto85°C ............................................................ 71
I/O Ports............................................................................................... 72
Port B.................................................................................................................. 72
Port C.................................................................................................................. 77
Port D.................................................................................................................. 80
Memory Programming........................................................................ 85
Program and Data Memory Lock Bits................................................................. 85
Fuse Bits............................................................................................................. 85
Signature Bytes .................................................................................................. 85
Programming the Flash and EEPROM............................................................... 86
Parallel Programming ......................................................................................... 86
Parallel Programming Characteristics ................................................................ 92
Serial Downloading............................................................................................. 93
Serial Programming Characteristics ................................................................... 97
Electrical Characteristics................................................................... 98
Absolute Maximum Ratings*............................................................................... 98
DC Characteristics.............................................................................................. 98
External Clock Drive Waveforms .................................................... 100
Typical Characteristics .................................................................... 101
Register Summary............................................................................ 112
Instruction Set Summary ................................................................. 114
Ordering Information........................................................................ 116
Packaging Information ..................................................................... 117
32A ................................................................................................................... 117
28P3 ................................................................................................................. 118
Errata for AT90S/LS4433 Rev. Rev. C/D/E/F................................... 119
Data Sheet Change Log for AT90S/LS4433.................................... 121
Changes from Rev. 1042E-09/01 to Ref. 1042F-03/02 .................................... 121
Changes from Rev. 1042F-03/02 to Ref. 1042G-09/02.................................... 121
Table of Contents .................................................................................. i