at89lp428-25pu ATMEL Corporation, at89lp428-25pu Datasheet - Page 6

• Manufacturer Part Number: at89lp428-25pu
• Description: 8-bit Microcontroller With 4k/8k Bytes In-system Programmable Flash
• Manufacturer: ATMEL Corporation

2.1
Figure 2-1.
6
Resonator
Crystal or
Block Diagram
AT89LP428/828
AT89LP428/828 Block Diagram
General-purpose
Configurable I/O
Configurable I/O
Configurable I/O
Configurable I/O
4K/8K Bytes
Flash Code
Configurable
RC Oscillator
Oscillator
Interrupt
Internal
Port 1
Port 2
Port 3
Port 4
POR
BOD
512/1K Bytes
Flash Data
8051 Single Cycle CPU
256 Bytes
RAM
Capture Array
Comparators
Dual Analog
Watchdog
Compare/
Timer 0
Timer 1
512 Bytes
Timer 2
On-chip
UART
Debug
Timer
SPI
ERAM
3654A–MICRO–8/09