BLOCK DIAGRAM—ÉlanSC400 MICROCONTROLLER
ÉlanSC400 Microcontroller
Addr
Memory
System Address Bus
Management
Data
Unit
®
Am486
CPU
Address
Decoder
Addr
Dual DMA
Controllers
8237
Data Bus
Data
Steering
Power
Management
Unit
GPIOs
Clock
Generation
LCD
Graphics
Controller
Clock I/O
Real-Time
Clock
Graphics or
32-kHz Crystal
Internal
Bus
Local Bus Controller
Local Bus
Controller
Boundary
Scan
AT Port
Logic
System
Arbiter
Timer
8254
GPIOs
Dual Interrupt
Controllers
8259
DRAM Control
ROM Control
Memory
Controller
PC Card
Controller
Socket A Ctrl
GPIOs or
DRAM Control or
Keyboard Rows
GPIOs
GPIOs
GPIOs or
Keyboard Rows
Parallel Port or
PC Card Socket B
Keyboard
Interface:
Matrix/XT/SCP
EPP
Parallel
Port
Columns or
XT Keyboard
ISA Control or
Serial Port
Infrared
Keyboard Rows
UART
16550
ISA Bus
Controller
ISA Control
ISA Control or
GPIOs
GPIOs
Infrared
Port
4
Élan™SC400 and ÉlanSC410 Microcontrollers Data Sheet
AMD [ AMD ]
