AT89LP216 Atmel Corporation, AT89LP216 Datasheet - Page 3

• Manufacturer Part Number: AT89LP216
• Manufacturer: Atmel Corporation

Specifications of AT89LP216

• Flash (kbytes): 2 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-1C
• Max I/o Pins: 14
• Spi: 1
• Uart: 1
• Sram (kbytes): 0.125
• Operating Voltage (vcc): 2.4 to 5.5
• Timers: 2
• Isp: SPI/OCD
• Watchdog: Yes

3. Pin Description
Table 3-1.
3621E–MICRO–11/10
Pin
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
Symbol
GND
VDD
P1.5
P1.7
P1.3
P1.2
P3.0
P3.4
P3.2
P3.3
P3.5
P3.1
P1.0
P1.1
P1.4
P1.6
Pin Description
Type
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
O
O
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
Description
P1.5: User-configurable I/O Port 1 bit 5.
MOSI: SPI master-out/slave-in. When configured as master, this pin is an output. When configured as slave, this pin
is an input.
GPI5: General-purpose Interrupt input 5.
P1.7: User-configurable I/O Port 1 bit 7.
SCK: SPI Clock. When configured as master, this pin is an output. When configured as slave, this pin is an input.
GPI7: General-purpose Interrupt input 7.
P1.3: User-configurable I/O Port 1 bit 3 (if Reset Fuse is disabled).
RST: External Active-Low Reset input (if Reset Fuse is enabled, see
GPI3: General-purpose Interrupt input 3.
DCL: Serial Clock input for On-Chip Debug Interface when OCD is enabled.
Ground
P1.2: User-configurable I/O Port 1 bit 2.
GPI2: General-purpose Interrupt input 2.
P3.0: User-configurable I/O Port 3 bit 0.
RXD: Serial Port Receiver Input.
P3.4: User-configurable I/O Port 3 bit 4.
T0: Timer/Counter 0 External Input or PWM Output.
P3.2: User-configurable I/O Port 3 bit 2.
XTAL1: Input to the inverting oscillator amplifier and internal clock generation circuits. It may be used as a port pin if
the internal RC oscillator is selected as the clock source.
DDA: Serial Data input/output for On-Chip Debug Interface when OCD is enabled and the internal RC oscillator is
selected as the clock source.
P3.3: User-configurable I/O Port 3 bit 3.
XTAL2: Output from inverting oscillator amplifier. It may be used as a port pin if the internal RC oscillator is selected
as the clock source.
CLKOUT: When the internal RC oscillator is selected as the clock source, may be used to output the internal clock
divided by 2.
DDA: Serial Data input/output for On-Chip Debug Interface when OCD is enabled and the external clock is selected
as the clock source.
P3.5: User-configurable I/O Port 3 bit 5.
T1: Timer/Counter 1 External input or PWM output.
P3.1: User-configurable I/O Port 3 bit 1.
TXD: Serial Port Transmitter Output.
Supply Voltage
P1.0: User-configurable I/O Port 1 bit 0.
AIN0: Analog Comparator Positive input.
GPI0: General-purpose Interrupt input 0.
P1.1: User-configurable I/O Port 1 bit 1.
AIN1: Analog Comparator Negative input.
GPI1: General-purpose Interrupt input 1
P1.4: User-configurable I/O Port 1 bit 4.
SS: SPI slave select input.
GPI4: General-purpose Interrupt input 4.
P1.6: User-configurable I/O Port 1 bit 6.
MISO: SPI master-in/slave-out. When configured as master, this pin is an input. When configured as slave, this pin
is an output.
GPI6: General-purpose Interrupt input 6.
Section 10.3 “External Reset” on page
AT89LP216
15)
3