AT90LS8535-4PI Atmel, AT90LS8535-4PI Datasheet - Page 5
![IC MCU 8K 4MHZ A/D LV IT 40DIP](/photos/6/70/67049/453-40-dip_sml.jpg)
AT90LS8535-4PI
Manufacturer Part Number
AT90LS8535-4PI
Description
IC MCU 8K 4MHZ A/D LV IT 40DIP
Manufacturer
Atmel
Series
AVR® 90LSr
Specifications of AT90LS8535-4PI
Core Processor
AVR
Core Size
8-Bit
Speed
4MHz
Connectivity
SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
32
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
512 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 6 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
40-DIP (0.600", 15.24mm)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
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Port D (PD7..PD0)
RESET
XTAL1
XTAL2
AVCC
AREF
AGND
1041H–11/01
current if the pull-up resistors are activated. Two Port C pins can alternatively be used
as oscillator for Timer/Counter2.
The Port C pins are tri-stated when a reset condition becomes active, even if the clock is
not running.
Port D is an 8-bit bi-directional I/O port with internal pull-up resistors. The Port D output
buffers can sink 20 mA. As inputs, Port D pins that are externally pulled low will source
current if the pull-up resistors are activated.
Port D also serves the functions of various special features of the AT90S8535 as listed
on page 86.
The Port D pins are tri-stated when a reset condition becomes active, even if the clock is
not running.
Reset input. An external reset is generated by a low level on the RESET pin. Reset
pulses longer than 50 ns will generate a reset, even if the clock is not running. Shorter
pulses are not guaranteed to generate a reset.
Input to the inverting oscillator amplifier and input to the internal clock operating circuit.
Output from the inverting oscillator amplifier.
AVCC is the supply voltage pin for Port A and the A/D Converter. If the ADC is not used,
this pin must be connected to VCC. If the ADC is used, this pin must be connected to
VCC via a low-pass filter. See page 68 for details on operation of the ADC.
AREF is the analog reference input for the A/D Converter. For ADC operations, a volt-
age in the range 2V to AV
Analog ground. If the board has a separate analog ground plane, this pin should be con-
nected to this ground plane. Otherwise, connect to GND.
CC
must be applied to this pin.
AT90S/LS8535
5
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