AT89LP4052 Atmel Corporation, AT89LP4052 Datasheet - Page 91

• Manufacturer Part Number: AT89LP4052
• Manufacturer: Atmel Corporation

Specifications of AT89LP4052

• Flash (kbytes): 4 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-1C
• Max I/o Pins: 15
• Spi: 1
• Uart: 1
• Sram (kbytes): 0.25
• Operating Voltage (vcc): 2.4 to 5.5
• Timers: 2
• Isp: SPI
• Watchdog: Yes

Table of Contents
3547J–MICRO–10/09
1.
2.
3.
4.
5.
6.
7.
8.
9.
10. System Clock ......................................................................................... 10
11. Oscillator Characteristics ..................................................................... 11
12. Reset ....................................................................................................... 14
Description ............................................................................................... 1
Pin Configuration ..................................................................................... 2
Pin Description ......................................................................................... 3
Block Diagram .......................................................................................... 4
Memory Organization .............................................................................. 4
Special Function Registers ..................................................................... 6
Comparison to Standard 8051 ................................................................ 7
Enhanced CPU ......................................................................................... 8
Restrictions on Certain Instructions .................................................... 10
2.1
5.1
5.2
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
9.1
9.2
10.1 Crystal Oscillator .................................................................................................10
10.2 External Clock Source .........................................................................................10
10.3 System Clock Out ................................................................................................10
12.1 Power-on Reset ...................................................................................................14
12.2 Brown-out Reset ..................................................................................................14
20-lead PDIP/SOIC/TSSOP ..................................................................................2
Program Memory ...................................................................................................4
Data Memory .........................................................................................................5
System Clock ........................................................................................................7
Instruction Execution with Single-cycle Fetch .......................................................7
Interrupt Handling ..................................................................................................7
Timer/Counters ......................................................................................................7
Serial Port ..............................................................................................................7
Watchdog Timer ....................................................................................................7
I/O Ports ................................................................................................................8
Reset .....................................................................................................................8
Branching Instructions .........................................................................................10
MOVX-related Instructions, Data Memory ...........................................................10
AT89LP2052/LP4052
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