AT89LP3240 Atmel Corporation, AT89LP3240 Datasheet - Page 7

• Manufacturer Part Number: AT89LP3240
• Manufacturer: Atmel Corporation

Specifications of AT89LP3240

• Flash (kbytes): 32 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-1C
• Max I/o Pins: 38
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Adc Channels: 8
• Adc Resolution (bits): 10
• Adc Speed (ksps): 153.8
• Sram (kbytes): 4.25
• Eeprom (bytes): 8192
• Self Program Memory: IAP
• Operating Voltage (vcc): 2.4 to 3.6
• Timers: 3
• Isp: SPI/OCD
• Watchdog: Yes

2.1
Figure 2-1.
3706C–MICRO–2/11
Block Diagram
AT89LP3240/6440 Block Diagram
Resonator
C r ystal o r
Timer 0 and Timer 1 in the AT89LP3240/6440 are enhanced with two new modes. Mode 0 can
be configured as a variable 9- to 16-bit timer/counter and Mode 1 can be configured as a 16-bit
auto-reload timer/counter. In addition, the timer/counters may each independently drive an 8-bit
precision pulse width modulation output.
Timer 2 on the AT89LP3240/6440 serves as a 16-bit time base for a 4-channel Compare/Cap-
ture Array with up to four multi-phasic, variable precision (up to 16-bit) PWM outputs.
The enhanced UART of the AT89LP3240/6440 includes Framing Error Detection and Automatic
Address Recognition. In addition, enhancements to Mode 0 allow hardware accelerated emula-
tion of half-duplex SPI or Two Wire interfaces.
The I/O ports of the AT89LP3240/6440 can be independently configured in one of four operating
modes. In quasi-bidirectional mode, the ports operate as in the classic 8051. In input-only mode,
the ports are tristated. Push-pull output mode provides full CMOS drivers and open-drain mode
provides just a pull-down. In addition, all 8 pins of Port 1 can be configured to generate an inter-
rupt using the general-purpose interrupt interface.
32K/64K Bytes
Configu r a b le I/ O
Configu r a b le I/ O
Configu r a b le I/ O
Configu r a b le I/ O
Configu r a b le I/ O
Flash Code
Configu r a b l e
Oscillator
On-Chip
Debug
P o r t 0
P o r t 1
P o r t 2
P o r t 3
P o r t 4
Flash Data
8K Bytes
8051 Single Cycle CPU
256 Bytes
Gene r al-pu r pos e
RC Oscillator
RAM
Accumulate
W atchdo g
Dual Data
(16 x 16)
Inter r up t
Pointers
Internal
Multiply
Timer
POR
BOD
4K Bytes
ERAM
8-channel 10-bit
Capture Array
Comparators
Dual Analog
Compare/
ADC/DAC
Timer 0
Timer 1
Timer 2
U A R T
Interface
XRAM
TWI
SPI
AT89LP3240/6440
8
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