AT89LP51ED2 Atmel Corporation, AT89LP51ED2 Datasheet - Page 251
AT89LP51ED2
Manufacturer Part Number
AT89LP51ED2
Description
Manufacturer
Atmel Corporation
Specifications of AT89LP51ED2
Flash (kbytes)
64 Kbytes
Max. Operating Frequency
20 MHz
Cpu
8051-1C
Max I/o Pins
42
Spi
1
Twi (i2c)
1
Uart
1
Adc Channels
7
Adc Resolution (bits)
10
Adc Speed (ksps)
153.8
Sram (kbytes)
2.25
Eeprom (bytes)
4096
Self Program Memory
API
Operating Voltage (vcc)
2.4 to 5.5
Timers
4
Isp
SPI/OCD/UART
Watchdog
Yes
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Table of Contents (Continued)
3714A–MICRO–7/11
14 Timer 2 .................................................................................................... 89
15 Programmable Counter Array (PCA) .................................................... 97
16 Hardware Watchdog Timer ................................................................. 106
17 Serial Interface (UART) ........................................................................ 109
18 Enhanced Serial Peripheral Interface ................................................ 127
13.3
13.4
13.5
13.6
14.1
14.2
14.3
14.4
14.5
15.1
15.2
15.3
15.4
15.5
15.6
15.7
16.1
16.2
17.1
17.2
17.3
17.4
17.5
17.6
17.7
18.1
18.2
18.3
Mode 1 – 16-bit Auto-Reload Timer/Counter ...................................................83
Mode 2 – 8-bit Auto-Reload Timer/Counter .....................................................84
Mode 3 – 8-bit Split Timer ...............................................................................84
Pulse Width Modulation ...................................................................................85
Timer 2 Registers ............................................................................................91
Capture Mode ..................................................................................................92
Auto-Reload Mode ...........................................................................................93
Baud Rate Generator ......................................................................................95
Frequency Generator (Programmable Clock Out) ...........................................96
PCA Timer/Counter .........................................................................................97
PCA Modules .................................................................................................100
PCA Capture Mode .......................................................................................103
16-bit Software Timer/ Compare Mode .........................................................103
High Speed Output Mode ..............................................................................104
Pulse Width Modulator Mode ........................................................................105
PCA Watchdog Timer ....................................................................................106
Software Reset ..............................................................................................107
WDT Registers ..............................................................................................108
Multiprocessor Communications ...................................................................111
Baud Rates ....................................................................................................111
Framing Error Detection ................................................................................116
Automatic Address Recognition ....................................................................116
More About Mode 0 .......................................................................................118
More About Mode 1 .......................................................................................122
More About Modes 2 and 3 ...........................................................................124
Interface Description ......................................................................................128
Master Operation ...........................................................................................131
Slave Operation .............................................................................................131
AT89LP51RD2/ED2/ID2 Preliminary
iii
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