Rainbow Electronics AT89C5122 User Manual

Features

Table of contents

Document Outline

Features
- Reference Documents
- Product Description
- AT8xC5122 Block Diagram
- AT83C5123 Block Diagram
Pinout
- High Pin Count Package Description
  - AT8xC5122 version
  - AT89C5122DS version
- Low Pin Count Package Description
  - AT8xC5122 and AT83C5123 versions
  - AT83C5123 version
- Pin Description
Typical Applications
- Recommended External components
- USB Keyboard with Smart Card Reader Using the AT8xC5122 and AT89C5122DS Versions
- USB Smart Card Reader Using the AT83C5123 Version
Memory Organization
- Program Memory Managament
- Data Memory Managament
  - RAM Achitecture
  - XRAM Achitecture
- Dual Data Pointer Register (DDPTR)
  - Assembly Language
- Registers
- AT8xC5122’s CRAM and E2PROM Versions
  - Using CRAM Memory
- AT8xC5122’s ROM Version
  - Security Level
- AT83C5123 Version
Special Function Registers (SFR’s)
- Introduction
- AT8xC5122 Version
- AT83C5123 Version
- SFR’s Description
Clock Controller
- On-Chip Oscillator
  - Quartz Specification
- Phase Lock Loop (PLL)
  - PLL Description
  - PLL Programming
- Clock Tree Architecture
- Registers
I/O Port Definition
- Ports vs Packages
- Port 0
- Port 1
- Port 2
- Port 3
- Port 4
- Port 5
- Port Configuration
- Registers
Smart Card Interface Block (SCIB)
- Block Diagram
- Definitions
- Functional Description
- Additional Features
- Alternate Card
- Registers
- DC/DC Converter
USB Controller
- USB Mass Storage Classes
  - USB Mass Storage Class CBI Transport
  - USB Mass Storage Class Bulk- Only Transport
- USB Device Firmware Upgrade (DFU)
- Description
  - Serial Interface Engine (SIE)
  - Function Interface Unit (UFI)
- Configuration
  - General Configuration
  - Endpoint Configuration
- Read/Write Data FIFO
  - Read Data FIFO
  - Write Data FIFO
- Bulk / Interrupt Transactions
- Control Transactions
- Isochronous Transactions
- Miscellaneous
- Suspend/Resume Management
- Detach Simulation
- USB Interrupt System
  - Interrupt System Priorities
  - Interrupt Control System
- Registers
Serial I/O Port
- Framing Error Detection
- Automatic Address Recognition
- Asynchronous Modes (Modes 1, 2 and 3)
  - Mode 1
- Modes 2 and 3
- Registers
Serial Port Interface (SPI)
- Features
- Signal Description
- Functional Description
Timers/Counters
- Timer/Counter Operations
- Timer 0
- Timer 1
- Registers
Keyboard Interface
- Introduction
- Description
  - Interrupt
  - Power Reduction Mode
- Registers
Interrupt System
- Introduction
- Interrupt System Description
- Registers
- Interrupt Sources and Vectors
Microcontroller Reset
- Introduction
- Power On Reset (POR)
- Power Fail Detector (PFD)
- Reset pin
- Watchdog Timer
Power Management
- Idle Mode
- Power Down Mode
- Reduced EMI Mode
- USB Interface
  - Suspend
  - Resume
- Smart Card Interface
  - Entering in Power-down Mode
  - Exiting from Power-down Mode
- Keyboard Interface
  - Entering in Power-down Mode
  - Exiting from Power-down Mode
- Watchdog Timer during Power-down and Idle Mode
- Registers
Electrical Characteristics
- Absolute Maximum Ratings
- DC Parameters
  - ICC Current Test Conditions
- LED’s
- Smart Card Interface
- USB Interface
- AC Parameters
- Float Waveforms
  - Clock Waveforms
  - USB Interface
Packaging Information
- Ordering Information
- Mechanical Dimensions
Datasheet Revision History
- Changes from 4202A to 4202B
- Changes from 4202B to 4202C
- Changes from 4202C to 4202D
- Changes from 4202D to 4202E
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