AT89LP51RC2 Atmel Corporation, AT89LP51RC2 Datasheet - Page 251
AT89LP51RC2
Manufacturer Part Number
AT89LP51RC2
Description
Manufacturer
Atmel Corporation
Specifications of AT89LP51RC2
Flash (kbytes)
32 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)
1.375
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)
3722A–MICRO–10/11
14 Timer 2 .................................................................................................... 87
15 Programmable Counter Array (PCA) .................................................... 95
16 Hardware Watchdog Timer ................................................................. 104
17 Serial Interface (UART) ........................................................................ 107
18 Enhanced Serial Peripheral Interface ................................................ 125
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
18.4
Mode 2 – 8-bit Auto-Reload Timer/Counter .....................................................82
Mode 3 – 8-bit Split Timer ...............................................................................82
Pulse Width Modulation ...................................................................................83
Timer 2 Registers ............................................................................................89
Capture Mode ..................................................................................................90
Auto-Reload Mode ...........................................................................................91
Baud Rate Generator ......................................................................................93
Frequency Generator (Programmable Clock Out) ...........................................94
PCA Timer/Counter .........................................................................................95
PCA Modules ...................................................................................................98
PCA Capture Mode .......................................................................................101
16-bit Software Timer/ Compare Mode .........................................................101
High Speed Output Mode ..............................................................................102
Pulse Width Modulator Mode ........................................................................103
PCA Watchdog Timer ....................................................................................104
Software Reset ..............................................................................................105
WDT Registers ..............................................................................................106
Multiprocessor Communications ...................................................................109
Baud Rates ....................................................................................................109
Framing Error Detection ................................................................................114
Automatic Address Recognition ....................................................................114
More About Mode 0 .......................................................................................116
More About Mode 1 .......................................................................................120
More About Modes 2 and 3 ...........................................................................122
Interface Description ......................................................................................126
Master Operation ...........................................................................................129
Slave Operation .............................................................................................129
Error Conditions .............................................................................................130
AT89LP51RB2/RC2/IC2 Preliminary
iii
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