1
Pin Configurations
TQFP Top View PDIP
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
(INT1) PD3
(T0) PD4
NC
VCC
GND
NC
XTAL1
XTAL2
PC1 (ADC1)
PC0 (ADC0)
NC
AGND
AREF
NC
AVCC
PB5 (SCK)
32 31 30 29 28 27 26 25
9 10 11 12 13 14 15 16
(T1) PD5
(AIN0) PD6 (AIN1) PD7
(ICP) PB0
(OC1) PB1
(SS) PB2
(MOS1) PB3 (MOS0) PB4
PD2 (INT0) PD1 (TXD) PD0 (RDX) RESET PC5 (ADC5) PC4 (ADC4) PC3 (ADC3) PC2 (ADC2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
RESET
(RXD) PD0
(TXD) PD1
(INT0) PD2
(INT1) PD3
(T0) PD4
VCC
GND
XTAL1
XTAL2
(T1) PD5
(AIN0) PD6
(AIN1) PD7
(ICP) PB0
PC5 (ADC5)
PC4 (ADC4)
PC3 (ADC3)
PC2 (ADC2)
PC1 (ADC1)
PC0 (ADC0)
AGND
AREF
AVCC
PB5 (SCK)
PB4 (MISO)
PB3 (MOSI)
PB2 (SS)
PB1 (OC1)
Features
• High-performance and Low-power AVR
®
8-bit RISC Architecture
– 118 Powerful Instructions - Most Single Cycle Execution
– 32 x 8 General Purpose Working Registers
– Up to 8 MIPS Throughput at 8 MHz
• Data and Nonvolatile Program Memory
– 2K/4K Bytes of In-System Programmable Flash
Endurance 1,000 Write/Erase Cycles
– 128 Bytes of SRAM
– 128/256 Bytes of In-System Programmable EEPROM
Endurance: 100,000 Write/Erase Cycles
– Programming Lock for Flash Program and EEPROM Data Security
• Peripheral Features
– One 8-bit Timer/Counter with Separate Prescaler
– Expanded 16-bit Timer/Counter with Separate Prescaler,
Compare, Capture Modes and 8-, 9- or 10-bit PWM
– On-chip Analog Comparator
– Programmable Watchdog Timer with Separate On-chip Oscillator
– Programmable UART
– 6-channel, 10-bit ADC
– Master/Slave SPI Serial Interface
• Special Microcontroller Features
– Brown-Out Reset Circuit
– Enhanced Power-on Reset Circuit
– Low-Power Idle and Power Down Modes
– External and Internal Interrupt Sources
• Specifications
– Low-power, High-speed CMOS Process Technology
– Fully Static Operation
• Power Consumption at 4 MHz, 3V, 25°C
– Active: 3.4 mA
– Idle Mode: 1.4 mA
– Power Down Mode: <1 µA
• I/O and Packages
– 20 Programmable I/O Lines
– 28-pin PDIP and 32-pin TQFP
• Operating Voltage
– 2.7V - 6.0V (AT90LS2333 and AT90LS4433)
– 4.0V - 6.0V (AT90S2333 and AT90S4433)
• Speed Grades
– 0 - 4 MHz (AT90LS2333 and AT90LS4433)
– 0 - 8 MHz (AT90S2333 and AT90S4433)
Rev. 1042DS–04/99
8-bit
Microcontroller
with 2K/4K bytes
In-System
Programmable
Flash
AT90S2333
AT90LS2333
AT90S4433
AT90LS4433
Preliminary
Note: This is a summary document. For the complete 103 page
document, please visit our Web site at www.atmel.com or e-mail
at literature@atmel.com and request literature #1042D.