AT90S2323-10SI Atmel, AT90S2323-10SI Datasheet - Page 4

• Manufacturer Part Number: AT90S2323-10SI
• Description: MCU 2K FLASH 10MHZ 8-SOIC
• Manufacturer: Atmel
• Series: AVR® 90Sr

Specifications of AT90S2323-10SI

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: SPI
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 3
• Program Memory Size: 2KB (1K x 16)
• Program Memory Type: FLASH
• Eeprom Size: 128 x 8
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 8-SOIC (5.3mm Width), 8-SOP, 8-SOEIAJ
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Data Converters: -

Comparison between
AT90S/LS2323 and
AT90S/LS2343
Pin Descriptions
AT90S/LS2323
VCC
GND
Port B (PB2..PB0)
RESET
XTAL1
XTAL2
4
AT90S/LS2323/2343
chip, the Atmel AT90S2323/2343 is a powerful microcontroller that provides a highly
flexible and cost-effective solution to many embedded control applications.
The AT90S2323/2343 AVR is supported with a full suite of program and system devel-
opment tools including: C compilers, macro assemblers, program debugger/simulators,
in-circuit emulators and evaluation kits.
The AT90S/LS2323 is intended for use with external quartz crystal or ceramic resonator
as the clock source. The start-up time is fuse-selectable as either 1 ms (suitable for
ceramic resonator) or 16 ms (suitable for crystal). The device has three I/O pins.
The AT90S/LS2343 is intended for use with either an external clock source or the inter-
nal RC oscillator as clock source. The device has five I/O pins.
Table 1 summarizes the differences in features of the two devices.
Table 1. Feature Difference Summary
Supply voltage pin.
Ground pin.
Port B is a 3-bit bi-directional I/O port with internal pull-up resistors. The Port B output
buffers can sink 20 mA. As inputs, Port B pins that are externally pulled low, will source
current if the pull-up resistors are activated.
Port B also serves the functions of various special features.
Port pins can provide internal pull-up resistors (selected for each bit). The Port B pins
are tri-stated when a reset condition becomes active.
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.
Part
On-chip Oscillator Amplifier
Internal RC Clock
PB3 available as I/O pin
PB4 available as I/O pin
Start-up time
AT90S/LS2323
yes
no
never
never
1 ms/16 ms
AT90S/LS2343
no
yes
internal clock mode
always
16 µs fixed
1004D–09/01