Features • • • • • • • • • • • • • • • • • • • • Utilizes the AVR ® Enhanced RISC Architecture AVR - High Performance and Low Power RISC Architecture 118 Powerful Instructions - Most Single Clock Cycle Execution 2K bytes of In-System Programmable ISP Flash – SPI Serial Interface for In-System Programming – Endurance: 1,000 Write/Erase Cycles 128 bytes EEPROM – Endurance: 100,000 Write/Erase Cycles 128 bytes Internal RAM 32 x 8 General Purpose Working Registers – 3 AT90S/LS2323 Programmable I/O Lines – 5 AT90S/LS2343 Programmable I/O Lines VCC: 4.0 - 6.0V AT90S2323/AT90S2343 VCC: 2.7 - 6.0V AT90LS2323/AT90LS2343 Power-On Reset Circuit Speed Grades: 0 - 10 MHz AT90S2323/AT90S2343 Speed Grades: 0 - 4 MHz AT90LS2323/AT90LS2343 Up to 10 MIPS Throughput at 10 MHz One 8-Bit Timer/Counter with Separate Prescaler External and Internal Interrupt Sources Programmable Watchdog Timer with On-Chip Oscillator Low Power Idle and Power Down Modes Programming Lock for Flash Program and EEPROM Data Security Selectable On-Chip RC Oscillator 8-Pin Device 8-Bit Microcontroller with 2K Bytes of In-System Programmable Flash Description The AT90S/LS2323 and AT90S/LS2343 is a low-power CMOS 8-bit microcontrollers based on the AVR ® enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the AT90S/LS2323 and AT90S/LS2343 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed. The AVR core combines a rich instruction set with 32 general purpose working registers. All the 32 registers are directly connected to the Arithmetic Logic Unit (ALU), allowing two independent registers to be accessed in one single instruction executed in one clock cycle. The resulting architecture is more code efficient while achieving throughputs up to ten times faster than conventional CISC microcontrollers. AT90S2323 AT90LS2323 AT90S2343 AT90LS2343 Preliminary AT90S/LS2323 Pin Configuration PDIP/SOIC RESET (CLOCK) PB3 PB4 GND 1 2 3 4 8 7 6 5 AT90S/LS2343 VCC RESET PB2 (SCK/T0) XTAL1 PB1 (MISO/INT0) XTAL2 PB0 (MOSI) GND 1 2 3 4 8 7 6 5 VCC PB2 (SCK/T0) PB1 (MISO/INT0) PB0 (MOSI) AT90S/LS2323 Rev. 1004AS–05/98 Note: This is a summary document. For the complete 34 page document, please visit our website at www.atmel.com or e-mail at [email protected] and request literature #1004A. 1 Block Diagram Figure 1. The AT90S/LS2343 Block Diagram VCC 8-BIT DATA BUS INTERNAL OSCILLATOR GND PROGRAM COUNTER STACK POINTER WATCHDOG TIMER PROGRAM FLASH SRAM MCU CONTROL REGISTER INSTRUCTION REGISTER INSTRUCTION DECODER CONTROL LINES GENERAL PURPOSE REGISTERS TIMING AND CONTROL TIMER/ COUNTER X Y Z INTERRUPT UNIT ALU EEPROM STATUS REGISTER PROGRAMMING LOGIC SPI OSCILLATOR DATA REGISTER PORTB DATA DIR. REG. PORTB PORTB DRIVERS PB0 - PB4 2 AT90S/LS2323 and AT90S/LS2343 RESET AT90S/LS2323 and AT90S/LS2343 Figure 2. The AT90S/LS2323 Block Diagram VCC 8-BIT DATA BUS INTERNAL OSCILLATOR GND PROGRAM COUNTER STACK POINTER WATCHDOG TIMER PROGRAM FLASH SRAM MCU CONTROL REGISTER INSTRUCTION REGISTER INSTRUCTION DECODER CONTROL LINES GENERAL PURPOSE REGISTERS TIMING AND CONTROL RESET TIMER/ COUNTER X Y Z INTERRUPT UNIT ALU EEPROM STATUS REGISTER PROGRAMMING LOGIC SPI OSCILLATOR DATA REGISTER PORTB DATA DIR. REG. PORTB PORTB DRIVERS PB0 - PB2 Description The AT90S/LS2323 and AT90S/LS2343 provides the following features: 2K bytes of In-System Programmable Flash, 128 bytes EEPROM, 128 bytes SRAM, 3 (AT90S/LS2323) / 5 (AT90S/LS2343) general purpose I/O lines, 32 general purpose working registers, an 8-bit timer/counter, internal and external interrupts, programmable Watchdog Timer with internal oscillator, an SPI serial port for Flash Memory downloading and two software selectable power saving modes. The Idle Mode stops the CPU while allowing the SRAM, timer/counters, SPI port and interrupt system to continue functioning. The power down mode saves the register contents but freezes the oscillator, disabling all other chip functions until the next interrupt or hardware reset. The device is manufactured using Atmel’s high density non-volatile memory technology. The on-chip Flash allows the program memory to be reprogrammed in-system through an SPI serial interface. By combining an 8-bit RISC CPU with ISP Flash on a monolithic chip, the Atmel AT90S/LS2323 and AT90S/LS2343 is a powerful micro- controller that provides a highly flexible and cost effective solution to many embedded control applications. The AT90S/LS2323 and AT90S/LS2343 AVR is supported with a full suite of program and system development tools including: C compilers, macro assemblers, program debugger/simulators, in-circuit emulators, and evaluation kits. Comparison Between AT90S/LS2323 and AT90S/LS2343 The AT90S/LS2323 is intended for use with external quartz crystal or ceramic resonator as the clock source. The startup time is fuse selectable as either 1 ms (suitable for ceramic resonator) or 16 ms (suitable for crystal). The device has three I/0 pins. The AT90S/LS2343 is intended for use with either an external clock source or the internal RC oscillator as clock source. The device has five I/0 pins. 3 Table 1 summarizes the differences in features of the two devices. Table 1. Feature Difference Summary Part AT90S/LS2323 AT90S/LS2343 On-chip oscillator amplifier yes no Internal RC Clock no yes PB3 usable never internal clock mode PB4 usable never always Startup time 1 ms / 16 ms 16 µs fixed Pin Descriptions AT90S/LS2323 VCC Supply voltage pin. GND Ground pin. Port B (PB2..PB0) Port B is a 3-bit bi-directional I/O port. Port pins can provide internal pull-up resistors (selected for each bit). RESET Reset input. A low on this pin for two machine cycles while the oscillator is running resets the device. XTAL1 Input to the inverting oscillator amplifier and input to the internal clock operating circuit. XTAL2 Output from the inverting oscillator amplifier. Clock Sources The AT90S/LS2323 contains an inverting amplifier which can be configured for use as an on-chip oscillator, as shown in Figure 3. XTAL1 and XTAL2 are input and output respectively. Either a quartz crystal or a ceramic resonator may be used. It is recommended to use the AT90S/LS2343 if an external clock source is used, since this gives an extra I/O pin. The AT90S/LS2343 can be clocked by an external clock signal, as shown in Figure 4, or by the on-chip RC oscillator. This RC oscillator runs at a nominal frequency of 1 MHz (VCC = 5V). A fuse bit - RCEN - in the Flash memory selects the on-chip RC oscillator as the clock source when programmed ('0'). The AT90S/LS2343 is shipped with this bit programmed. Figure 3. Oscillator Connection Figure 4. External Clock Drive Configuration Pin Descriptions AT90S/LS2343 VCC Supply voltage pin. GND Ground pin. Port B (PB4..PB0) Port B is a 5-bit bi-directional I/O port. Port pins can provide internal pull-up resistors (selected for each bit). When the device is clocked from an external clock source, PB3 is used as the clock input. RESET Reset input. A low on this pin for two machine cycles while the oscillator is running resets the device. CLOCK Clock signal input in external clock mode. 4 AT90S/LS2323 and AT90S/LS2343 AT90S/LS2323 and AT90S/LS2343 AT90S/LS2323 and AT90S/LS2343 Architectural Overview The fast-access register file concept contains 32 x 8-bit general purpose working registers with a single clock cycle access time. This means that during one single clock cycle, one ALU (Arithmetic Logic Unit) operation is executed. Two operands are output from the register file, the operation is executed, and the result is stored back in the register file in one clock cycle. Six of the 32 registers can be used as three 16-bits indirect address register pointers for Data Space addressingenabling efficient address calculations. One of the three address pointers is also used as the address pointer for the constant table look up function. These added function registers are the 16-bit X-register, Y-register and Z-register. The ALU supports arithmetic and logic functions between registers or between a constant and a register. Single register operations are also executed in the ALU. Figure 5 shows the AT90S/LS2323 and AT90S/LS2343 AVR Enhanced RISC microcontroller architecture. In addition to the register operation, the conventional memory addressing modes can be used on the register file as well. This is enabled by the fact that the register file is assigned the 32 lowermost Data Space addresses ($00 $1F), allowing them to be accessed as though they were ordinary memory locations. The I/O memory space contains 64 addresses for CPU peripheral functions as Control Registers, Timer/Counters, A/D-converters, and other I/O functions. The I/O memory can be accessed directly, or as the Data Space locations following those of the register file, $20 - $5F. The AVR has Harvard architecture - with separate memories and buses for program and data. The program memory is accessed with a two stage pipeline. While one instruction is being executed, the next instruction is pre-fetched from the program memory. This concept enables instructions to be executed in every clock cycle. The program memory is in-system downloadable Flash memory. With the relative jump and call instructions, the whole 1K address space is directly accessed. Most AVR instructions have a single 16-bit word format. Every program memory address contains a 16- or 32-bit instruction. During interrupts and subroutine calls, the return address program counter (PC) is stored on the stack. The stack is effectively allocated in the general data SRAM, and consequently the stack size is only limited by the total SRAM size and the usage of the SRAM. All user programs must initialize the SP in the reset routine (before subroutines or interrupts are executed). The 8-bit stack pointer SP is read/write accessible in the I/O space. The 128 bytes data SRAM + register file and I/O registers can be easily accessed through the five different addressing modes supported in the AVR architecture. The memory spaces in the AVR architecture are all linear and regular memory maps. 5 Figure 5. The AT90S/LS2323 and AT90S/LS2343 AVR Enhanced RISC Architecture AVR AT90S2323/AT90S2343 Architecture Data Bus 8-bit 1K x 16 Program Flash Program Counter Status and Test 32 x 8 General Purpose Registers Control Lines Direct Addressing Instruction Decoder Indirect Addressing Instruction Register Control Registers Interrupt Unit SPI Unit 8-bit Timer/Counter ALU Watchdog Timer 128 x 8 Data SRAM I/O Lines 128 x 8 EEPROM Figure 6. Memory Maps $000 EEPROM (128 x 8) $07F 6 AT90S/LS2323 and AT90S/LS2343 AT90S/LS2323 and AT90S/LS2343 Register Summary 7 Address Name $3F ($5F) $3E ($5E) $3D ($5D) $3C ($5C) $3B ($5B) $3A ($5A) $39 ($59) $38 ($58) $37 ($57) $36 ($56) $35 ($55) $34 ($54) $33 ($53) $32 ($52) $31 ($51) $30 ($50) $2F ($4F) $2E ($4E) $2D ($4D) $2C ($4C) $2B ($4B) $2A ($4A) $29 ($49) $28 ($48) $27 ($47) $26 ($46) $25 ($45) $24 ($44) $23 ($43) $22 ($42) $21 ($41) $20 ($40) $1F ($3F) $1E ($3E) $1D ($3D) $1C ($3C) $1B ($3B) $1A ($3A) $19 ($39) $18 ($38) $17 ($37) $16 ($36) $15 ($35) $14 ($34) $13 ($33) $12 ($32) $11 ($31) $10 ($30) $0F ($2F) $0E ($2E) $0D ($2D) $0C ($2C) $0B ($2B) $0A ($2A) $09 ($29) $08 ($28) … $00 ($20) SREG Reserved SPL Reserved GIMSK GIFR TIMSK TIFR Reserved Reserved MCUCR MCUSR TCCR0 TCNT0 Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved WDTCR Reserved Reserved EEAR EEDR EECR Reserved Reserved Reserved PORTB DDRB PINB Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Reserved Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Page I T H S V N Z C page 13 SP7 SP6 SP5 SP4 SP3 SP2 SP1 SP0 page 13 - INT0 INTF0 - - - - - - - - - - - TOIE0 TOV0 - page 17 page 17 page 15 page 16 SE - SM - - CS02 ISC01 EXTRF CS01 ISC00 PORF CS00 page 16 page 14 page 20 page 20 - WDTO WDE WDP2 WDP1 WDP0 page 21 Timer/Counter0 (8 Bit) - - EEPROM Address Register EEPROM Data register - - - - PORTB DDB4 PINB4 - EEMW EEWE EERE page 22 page 22 page 22 PORTB DDB3 PINB3 PORTB DDB2 PINB2 PORTB DDB1 PINB1 PORTB DDB0 PINB0 page 23 page 23 page 23 AT90S/LS2323 and AT90S/LS2343 AT90S/LS2323 and AT90S/LS2343 AT90S/LS2323 and AT90S/LS2343 Instruction Set Summary Mnemonics Operands Description ARITHMETIC AND LOGIC INSTRUCTIONS ADD Rd, Rr Add two Registers ADC Rd, Rr Add with Carry two Registers ADIW Rdl,K Add Immediate to Word SUB Rd, Rr Subtract two Registers SUBI Rd, K Subtract Constant from Register SBIW Rdl,K Subtract Immediate from Word SBC Rd, Rr Subtract with Carry two Registers SBCI Rd, K Subtract with Carry Constant from Reg. AND Rd, Rr Logical AND Registers ANDI Rd, K Logical AND Register and Constant OR Rd, Rr Logical OR Registers ORI Rd, K Logical OR Register and Constant EOR Rd, Rr Exclusive OR Registers COM Rd One’s Complement NEG Rd Two’s Complement SBR Rd,K Set Bit(s) in Register CBR Rd,K Clear Bit(s) in Register INC Rd Increment DEC Rd Decrement TST Rd Test for Zero or Minus CLR Rd Clear Register SER Rd Set Register BRANCH INSTRUCTIONS RJMP k Relative Jump IJMP Indirect Jump to (Z) RCALL k Relative Subroutine Call ICALL Indirect Call to (Z) RET Subroutine Return RETI Interrupt Return CPSE Rd,Rr Compare, Skip if Equal CP Rd,Rr Compare CPC Rd,Rr Compare with Carry CPI Rd,K Compare Register with Immediate SBRC Rr, b Skip if Bit in Register Cleared SBRS Rr, b Skip if Bit in Register is Set SBIC P, b Skip if Bit in I/O Register Cleared SBIS P, b Skip if Bit in I/O Register is Set BRBS s, k Branch if Status Flag Set BRBC s, k Branch if Status Flag Cleared BREQ k Branch if Equal BRNE k Branch if Not Equal BRCS k Branch if Carry Set BRCC k Branch if Carry Cleared BRSH k Branch if Same or Higher BRLO k Branch if Lower BRMI k Branch if Minus BRPL k Branch if Plus BRGE k Branch if Greater or Equal, Signed BRLT k Branch if Less Than Zero, Signed BRHS k Branch if Half Carry Flag Set BRHC k Branch if Half Carry Flag Cleared BRTS k Branch if T Flag Set BRTC k Branch if T Flag Cleared BRVS k Branch if Overflow Flag is Set BRVC k Branch if Overflow Flag is Cleared BRIE k Branch if Interrupt Enabled BRID k Branch if Interrupt Disabled Operation Flags #Clock Rd ← Rd + Rr Rd ← Rd + Rr + C Rdh:Rdl ← Rdh:Rdl + K Rd ← Rd − Rr Rd ← Rd − K Rdh:Rdl ← Rdh:Rdl − K Rd ← Rd − Rr − C Rd ← Rd − K − C Rd ← Rd • Rr Rd ← Rd • K Rd ← Rd v Rr Rd ← Rd v K Rd ← Rd ⊕ Rr Rd ← $FF − Rd Rd ← $00 − Rd Rd ← Rd v K Rd ← Rd • ($FF − K) Rd ← Rd + 1 Rd ← Rd − 1 Rd ← Rd • Rd Rd ← Rd ⊕ Rd Rd ← $FF Z,C,N,V,H Z,C,N,V,H Z,C,N,V,S Z,C,N,V,H Z,C,N,V,H Z,C,N,V,S Z,C,N,V,H Z,C,N,V,H Z,N,V Z,N,V Z,N,V Z,N,V Z,N,V Z,C,N,V Z,C,N,V,H Z,N,V Z,N,V Z,N,V Z,N,V Z,N,V Z,N,V None 1 1 2 1 1 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 PC ← PC + k + 1 PC ← Z PC ← PC + k + 1 PC ← Z PC ← STACK PC ← STACK if (Rd = Rr) PC ← PC + 2 or 3 Rd − Rr Rd − Rr − C Rd − K if (Rr(b)=0) PC ← PC + 2 or 3 if (Rr(b)=1) PC ← PC + 2 or 3 if (P(b)=0) PC ← PC + 2 or 3 if (R(b)=1) PC ← PC + 2 or 3 if (SREG(s) = 1) then PC←PC + k + 1 if (SREG(s) = 0) then PC←PC + k + 1 if (Z = 1) then PC ← PC + k + 1 if (Z = 0) then PC ← PC + k + 1 if (C = 1) then PC ← PC + k + 1 if (C = 0) then PC ← PC + k + 1 if (C = 0) then PC ← PC + k + 1 if (C = 1) then PC ← PC + k + 1 if (N = 1) then PC ← PC + k + 1 if (N = 0) then PC ← PC + k + 1 if (N ⊕ V= 0) then PC ← PC + k + 1 if (N ⊕ V= 1) then PC ← PC + k + 1 if (H = 1) then PC ← PC + k + 1 if (H = 0) then PC ← PC + k + 1 if (T = 1) then PC ← PC + k + 1 if (T = 0) then PC ← PC + k + 1 if (V = 1) then PC ← PC + k + 1 if (V = 0) then PC ← PC + k + 1 if ( I = 1) then PC ← PC + k + 1 if ( I = 0) then PC ← PC + k + 1 None None None None None I None Z, N,V,C,H Z, N,V,C,H Z, N,V,C,H None None None None None None None None None None None None None None None None None None None None None None None None 2 2 3 3 4 4 1/2 1 1 1 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2 (continued) 8 Mnemonics Operands Description DATA TRANSFER INSTRUCTIONS MOV Rd, Rr Move Between Registers LDI Rd, K Load Immediate LD Rd, X Load Indirect LD Rd, X+ Load Indirect and Post-Inc. LD Rd, - X Load Indirect and Pre-Dec. LD Rd, Y Load Indirect LD Rd, Y+ Load Indirect and Post-Inc. LD Rd, - Y Load Indirect and Pre-Dec. LDD Rd,Y+q Load Indirect with Displacement LD Rd, Z Load Indirect LD Rd, Z+ Load Indirect and Post-Inc. LD Rd, -Z Load Indirect and Pre-Dec. LDD Rd, Z+q Load Indirect with Displacement LDS Rd, k Load Direct from SRAM ST X, Rr Store Indirect ST X+, Rr Store Indirect and Post-Inc. ST - X, Rr Store Indirect and Pre-Dec. ST Y, Rr Store Indirect ST Y+, Rr Store Indirect and Post-Inc. ST - Y, Rr Store Indirect and Pre-Dec. STD Y+q,Rr Store Indirect with Displacement ST Z, Rr Store Indirect ST Z+, Rr Store Indirect and Post-Inc. ST -Z, Rr Store Indirect and Pre-Dec. STD Z+q,Rr Store Indirect with Displacement STS k, Rr Store Direct to SRAM LPM Load Program Memory IN Rd, P In Port OUT P, Rr Out Port PUSH Rr Push Register on Stack POP Rd Pop Register from Stack BIT AND BIT-TEST INSTRUCTIONS SBI P,b Set Bit in I/O Register CBI P,b Clear Bit in I/O Register LSL Rd Logical Shift Left LSR Rd Logical Shift Right ROL Rd Rotate Left Through Carry ROR Rd Rotate Right Through Carry ASR Rd Arithmetic Shift Right SWAP Rd Swap Nibbles BSET s Flag Set BCLR s Flag Clear BST Rr, b Bit Store from Register to T BLD Rd, b Bit load from T to Register SEC Set Carry CLC Clear Carry SEN Set Negative Flag CLN Clear Negative Flag SEZ Set Zero Flag CLZ Clear Zero Flag SEI Global Interrupt Enable CLI Global Interrupt Disable SES Set Signed Test Flag CLS Clear Signed Test Flag SEV Set Twos Complement Overflow CLV Clear Twos Complement Overflow SET Set T in SREG CLT Clear T in SREG SEH Set Half Carry Flag in SREG CLH Clear Half Carry Flag in SREG NOP No Operation SLEEP Sleep WDR Watchdog Reset 9 Operation Flags #Clocks Rd ← Rr Rd ← K Rd ← (X) Rd ← (X), X ← X + 1 X ← X − 1, Rd ← (X) Rd ← (Y) Rd ← (Y), Y ← Y + 1 Y ← Y − 1, Rd ← (Y) Rd ← (Y + q) Rd ← (Z) Rd ← (Z), Z ← Z+1 Z ← Z - 1, Rd ← (Z) Rd ← (Z + q) Rd ← (k) (X) ← Rr (X) ← Rr, X ← X + 1 X ← X - 1, (X) ← Rr (Y) ← Rr (Y) ← Rr, Y ← Y + 1 Y ← Y - 1, (Y) ← Rr (Y + q) ← Rr (Z) ← Rr (Z) ← Rr, Z ← Z + 1 Z ← Z - 1, (Z) ← Rr (Z + q) ← Rr (k) ← Rr R0 ← (Z) Rd ← P P ← Rr STACK ← Rr Rd ← STACK None None None None None None None None None None None None None None None None None None None None None None None None None None None None None None None 1 1 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 1 1 2 2 I/O(P,b) ← 1 I/O(P,b) ← 0 Rd(n+1) ← Rd(n), Rd(0) ← 0 Rd(n) ← Rd(n+1), Rd(7) ← 0 Rd(0)←C,Rd(n+1)← Rd(n),C←Rd(7) Rd(7)←C,Rd(n)← Rd(n+1),C←Rd(0) Rd(n) ← Rd(n+1), n=0..6 Rd(3..0)←Rd(7..4),Rd(7..4)←Rd(3..0) SREG(s) ← 1 SREG(s) ← 0 T ← Rr(b) Rd(b) ← T C←1 C←0 N←1 N←0 Z←1 Z←0 I←1 I←0 S←1 S←0 V←1 V←0 T←1 T←0 H←1 H←0 None None Z,C,N,V Z,C,N,V Z,C,N,V Z,C,N,V Z,C,N,V None SREG(s) SREG(s) T None C C N N Z Z I I S S V V T T H H None None None 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 3 1 (see specific descr. for Sleep (see specific descr. for WDR/timer) AT90S/LS2323 and AT90S/LS2343 AT90S/LS2323 and AT90S/LS2343 Ordering Information Power Supply Speed (MHz) 2.7 - 6.0V 4 4.0 - 6.0V 2.7 - 6.0V 4.0 - 6.0V 10 4 10 Ordering Code Package Operation Range AT90LS2343-4PC AT90LS2343-4SC 8P3 8S2 Commercial (0°C to 70°C) AT90LS2343-4PI AT90LS2343-4SI 8P3 8S2 Industrial (-40°C to 85°C) AT90S2343-10PC AT90S2343-10SC 8P3 8S2 Commercial (0°C to 70°C) AT90S2343-10PI AT90S2343-10SI 8P3 8S2 Industrial (-40°C to 85°C) AT90LS2323-4PC AT90LS2323-4SC 8P3 8S2 Commercial (0°C to 70°C) AT90LS2323-4PI AT90LS2323-4SI 8P3 8S2 Industrial (-40°C to 85°C) AT90S2323-10PC AT90S2323-10SC 8P3 8S2 Commercial (0°C to 70°C) AT90S2323-10PI AT90S2323-10SI 8P3 8S2 Industrial (-40°C to 85°C) Package Type 8P3 8-Lead, 0.300" Wide, Plastic Dual Inline Package (PDIP) 8S2 8-Lead, 0.200" Wide, Plastic Gull Wing Small Outline (SOIC) 10 Packaging Information 8P3, 8-Lead, 0.300" Wide, Plastic Dual Inline Package (PDIP) Dimensions in Inches and (Millimeters) 8S2, 8-Lead, 0.200" Wide, Plastic Gull Wing Small Outline (EIAJ SOIC) Dimensions in Inches and (Millimeters) JEDEC STANDARD MS-001 BA .020 (.508) .012 (.305) .400 (10.16) .355 (9.02) PIN 1 .280 (7.11) .240 (6.10) .300 (7.62) REF .210 (5.33) MAX .037 (.940) .027 (.690) .100 (2.54) BSC .212 (5.38) .203 (5.16) .080 (2.03) .070 (1.78) .015 (.380) MIN .150 (3.81) .115 (2.92) .070 (1.78) .045 (1.14) .022 (.559) .014 (.356) .013 (.330) .004 (.102) .325 (8.26) .300 (7.62) 0 REF 15 0 REF 8 .430 (10.9) MAX 11 .330 (8.38) .300 (7.62) .050 (1.27) BSC SEATING PLANE .012 (.305) .008 (.203) .213 (5.41) .205 (5.21) PIN 1 AT90S/LS2323 and AT90S/LS2343 .035 (.889) .020 (.508) .010 (.254) .007 (.178)