ATMEGA8535L-8PU - 8KB Flash AVR MCU 8MHz DIP-40 | Microchip
MPN: ATMEGA8535L-8PU ✓ فعالATMEGA8535L-8PU جائزہ
An AVR microcontroller is a single-chip computer built on the AVR enhanced RISC architecture, in which most of its 130 instructions execute in a single clock cycle, delivering roughly 1 MIPS per MHz. Within the embedded-systems hierarchy, a microcontroller unit (MCU) integrates the CPU core, program memory, data memory, peripherals, and general-purpose I/O on one die, replacing multi-chip processor-plus-logic solutions in industrial control, instrumentation, and hobbyist platforms.
Key features include 32 programmable I/O lines, an 8-channel 10-bit A/D converter for direct analog sensor connection, three flexible timer/counters (two 8-bit, one 16-bit) with compare and PWM modes, a byte-oriented Two-wire Serial Interface (TWI/I2C), and a full-duplex serial USART. The L suffix denotes the low-voltage grade, operating from 2.7V to 5.5V at 0-8 MHz per the internal verified database, suiting battery-powered designs.
Technically, the Harvard architecture with separate program and data buses plus a 2-cycle hardware multiplier underpins the high code efficiency. Six software-selectable sleep modes (Idle, ADC Noise Reduction, Power-save, Power-down, Standby, Extended Standby) trade wake-up latency for microamp-level current. The 8 KB Flash supports 1,000 write/erase cycles with Read-While-Write, enabling field firmware updates via SPI ISP.
Typical applications include industrial control panels, ADC-based sensor data loggers, PWM motor control, and breadboard-friendly educational embedded systems where the through-hole DIP-40 package simplifies prototyping.
Design consideration: verify the VCC-versus-frequency curve before clocking near 8 MHz at low VCC, use a 0.1 uF decoupling capacitor across VCC/GND, and keep the AREF path clean for 10-bit ADC accuracy.
This page synthesizes distributor pricing, drop-in DIP-40 alternatives, full pinout, and design notes not consolidated in the manufacturer datasheet.
کے لیے ڈراپ اِن متبادل ATMEGA8535L-8PU — یکساں پیکیج، پن سے پن مطابقت پذیر۔ مختلف پیکیج والے پرزے جن کے لیے PCB دوبارہ کام درکار ہو، شامل نہیں ہیں۔
اس سیریز میں مختلف ورژن
اسی سیریز کے ماڈلز جو ڈراپ اِن مطابقت رکھتے ہیں ATMEGA8535L-8PU (یکساں فارم فیکٹر اور فٹ پرنٹ) — میں مختلف Communication Interfaces, Operating Temperature, SRAM, EEPROM, Throughput.
ATMEGA8535L-8PI
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATMEGA8535-16PJ
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →AT90S8535-8PI
✅ ڈراپ-اِن📋 حوالہ جاتی متبادل (کیٹلاگ میں نہیں)
ATMEGA32L-8PU
✅ ڈراپ-اِنقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATMEGA8515-16PI
✅ ڈراپ-اِن ⚠️ تفصیلات غیر تصدیق شدہقیمت کے لیے رابطہ کریں
ڈیٹا شیٹ دیکھیں →ATMEGA8535L-8PU زیادہ سے زیادہ ریٹنگز اور برقی خصوصیات
| Core Architecture | 8-bit AVR RISC |
| Flash Memory | 8 KB (4K x 16) In-System Programmable |
| SRAM | 512 B |
| EEPROM | 512 B |
| زیادہ سے زیادہ کلاک فریکوئنسی | 8 MHz |
| Supply Voltage Range | 2.7 V to 5.5 V (L grade) |
| Throughput | Up to 8 MIPS at 8 MHz (1 MIPS/MHz) |
| ADC | 8-channel, 10-bit |
| Timers/Counters | 2 x 8-bit, 1 x 16-bit |
| Communication Interfaces | USART, TWI (I2C), SPI |
| General Purpose I/O | 32 lines |
| Flash Endurance | 1,000 write/erase cycles |
| Sleep Modes | 6 (Idle, ADC NR, Power-save, Power-down, Standby, Extended Standby) |
| پیکیج | 40-PDIP (0.600 in, 15.24 mm) |
| ماؤنٹنگ ٹائپ | Through Hole |
| آپریٹنگ درجہ حرارت | 0C to +70C (commercial, PU suffix) |
| لائف سائیکل کی حالت | Active |
ATMEGA8535L-8PU پن کنفیگریشن
| پن 1 | PB0 (XCK/T0) — PORTB bit 0 / USART external clock / Timer0 external clock input |
| پن 2 | PB1 (T1) — PORTB bit 1 / Timer1 external clock input |
| پن 3 | PB2 (INT2/AIN0) — PORTB bit 2 / External interrupt 2 / Analog comparator positive input |
| پن 4 | PB3 (OC0/AIN1) — PORTB bit 3 / Timer0 output compare / Analog comparator negative input |
| پن 5 | PB4 (SS) — PORTB bit 4 / SPI slave select |
| پن 6 | PB5 (MOSI) — PORTB bit 5 / SPI master output slave input (used for ISP) |
| پن 7 | PB6 (MISO) — PORTB bit 6 / SPI master input slave output (used for ISP) |
| پن 8 | PB7 (SCK) — PORTB bit 7 / SPI serial clock (used for ISP) |
| پن 9 | RESET — Reset input, active low |
| پن 10 | VCC — Digital supply voltage (2.7 V to 5.5 V) |
| پن 11 | GND — Digital ground |
| پن 12 | XTAL2 — Inverting oscillator amplifier output |
| پن 13 | XTAL1 — Inverting oscillator amplifier input / external clock input |
| پن 14 | PD0 (RXD) — PORTD bit 0 / USART receive data input |
| پن 15 | PD1 (TXD) — PORTD bit 1 / USART transmit data output |
| پن 16 | PD2 (INT0) — PORTD bit 2 / External interrupt 0 |
| پن 17 | PD3 (INT1) — PORTD bit 3 / External interrupt 1 |
| پن 18 | PD4 (OC1B) — PORTD bit 4 / Timer/Counter1 output compare B PWM output |
| پن 19 | PD5 (OC1A) — PORTD bit 5 / Timer/Counter1 output compare A PWM output |
| پن 20 | PD6 (ICP1) — PORTD bit 6 / Timer/Counter1 input capture |
| پن 21 | PD7 (OC2) — PORTD bit 7 / Timer/Counter2 output compare PWM output |
| پن 22 | PC0 (SCL) — PORTC bit 0 / TWI serial clock line |
| پن 23 | PC1 (SDA) — PORTC bit 1 / TWI serial data line |
| پن 24 | PC2 (TCK) — PORTC bit 2 / JTAG test clock |
| پن 25 | PC3 (TMS) — PORTC bit 3 / JTAG test mode select |
| پن 26 | PC4 (TDO) — PORTC bit 4 / JTAG test data output |
| پن 27 | PC5 (TDI) — PORTC bit 5 / JTAG test data input |
| پن 28 | PC6 (TOSC1) — PORTC bit 6 / Timer oscillator input for async Timer2 |
| پن 29 | PC7 (TOSC2) — PORTC bit 7 / Timer oscillator output for async Timer2 |
| پن 30 | AVCC — Analog supply voltage for ADC and Port A |
| پن 31 | GND — Ground |
| پن 32 | AREF — Analog reference voltage for ADC |
| پن 33 | PA7 (ADC7) — PORTA bit 7 / ADC channel 7 |
| پن 34 | PA6 (ADC6) — PORTA bit 6 / ADC channel 6 |
| پن 35 | PA5 (ADC5) — PORTA bit 5 / ADC channel 5 |
| پن 36 | PA4 (ADC4) — PORTA bit 4 / ADC channel 4 |
| پن 37 | PA3 (ADC3) — PORTA bit 3 / ADC channel 3 |
| پن 38 | PA2 (ADC2) — PORTA bit 2 / ADC channel 2 |
| پن 39 | PA1 (ADC1) — PORTA bit 1 / ADC channel 1 |
| پن 40 | PA0 (ADC0) — PORTA bit 0 / ADC channel 0 |
عام استعمالات
ATMEGA8535L-8PU کے لیے موزوں ہے 6 ایپلیکیشنs: Industrial Control Panels, Sensor Data Logging, PWM Motor Control, Educational and Hobbyist Embedded Systems, Serial Communication Gateways, Battery-Powered Portable Instruments.
Industrial Control Panels
The ATMEGA8535L-8PU fits industrial control panels where 32 GPIO lines drive relays, indicators, and contactors while the 10-bit ADC monitors analog setpoints. Its 8 KB ISP Flash stores control logic, and the USART links to HMIs or SCADA gateways. Operating from a regulated 5V rail, the AVR core's 1 MIPS/MHz throughput executes closed-loop control at kilohertz rates, and the Watchdog Timer recovers firmware from disturbances. The through-hole DIP-40 package withstands vibration better than fine-pitch SMD in retrofit boards, and field firmware updates via SPI ISP avoid unsoldering the device during maintenance.
تجویز کردہ
Sensor Data Logging
For battery-powered data loggers, the ATMEGA8535L-8PU's 8-channel 10-bit ADC digitizes temperature, pressure, and voltage inputs directly without an external converter, while 512 B EEPROM retains calibration constants across power cycles. The 2.7V minimum supply supports three-cell battery operation, and the Power-down sleep mode drops supply current to microamp levels between samples, extending battery life in multi-month deployments. The TWI interface connects external I2C EEPROM or RTC ICs to extend storage beyond the on-chip 512 B, and the USART streams logged data to a PC or radio module during periodic downloads.
تجویز کردہ
PWM Motor Control
The ATMEGA8535L-8PU generates motor drive waveforms using its two 8-bit timers and one 16-bit timer with output-compare channels (OC0, OC1A, OC1B, OC2), producing hardware PWM without CPU intervention. The 16-bit Timer/Counter1 supports phase-correct and fast PWM modes for DC motor speed control, while the input-capture unit (ICP1) measures encoder or tachometer feedback with timer resolution. At 8 MHz, PWM resolution reaches 10 bits at reduced frequency, adequate for fan and pump control. Driving MOSFET gate-driver ICs from the timer outputs, the MCU closes speed loops at hundreds of hertz using the 10-bit ADC for current sensing.
تجویز کردہ
Educational and Hobbyist Embedded Systems
The DIP-40 through-hole package of the ATMEGA8535L-8PU plugs directly into breadboards and 0.1-inch perfboards, making it a staple for electronics education and maker projects. Students program it over SPI ISP with free AVR-GCC toolchains and can observe signals on 32 GPIO pins with a logic probe. The 8-channel 10-bit ADC supports hands-on analog labs, and three timer/counters demonstrate PWM, input capture, and real-time concepts. Operation from a simple 5V USB supply, a 8 MHz crystal, and two decoupling capacitors is a complete minimum system, keeping entry cost minimal for classrooms.
تجویز کردہ
Serial Communication Gateways
With a full-duplex USART, hardware SPI, and a byte-oriented Two-wire Serial Interface, the ATMEGA8535L-8PU bridges devices across different buses in small gateways. A typical design reads sensors over I2C, aggregates them in 512 B SRAM, and forwards frames over RS-485 or RS-232 via the USART at standard baud rates from its 8 MHz clock. The SPI master also drives external Flash or Ethernet modules where extra storage is needed. PORTC pins double as TWI (SCL/SDA on PC0/PC1), so the gateway fits entirely within one DIP-40 device while the 10-bit ADC simultaneously monitors the 5V rail or sensor excitation for diagnostics.
تجویز کردہ
Battery-Powered Portable Instruments
Portable meters and handheld testers benefit from the ATMEGA8535L-8PU's combination of a 2.7V minimum supply, six sleep modes, and an integrated 10-bit ADC that eliminates a separate converter IC, reducing board area and quiescent budget. In ADC Noise Reduction mode the core halts while the converter runs, improving effective ADC resolution for millivolt-level measurements. The LCD-driving capability of port pins, the Power-save mode with Timer/Counter2 for periodic wake-up, and EEPROM storage of calibration data let a single DIP-40 device implement a complete handheld instrument that runs for months on alkaline cells between sampling sessions.
تجویز کردہ
تجویز کردہ پروڈکٹس کا خلاصہ
کے لیے انجینئرنگ ریفرنس ڈیٹا ATMEGA8535L-8PU — موازنہ، ڈیزائن رہنمائی، اور تعمیل کی معلومات۔
انتخاب کی گائیڈ
متبادلات کے ساتھ موازنہ
| پیرامیٹر | یہ پروڈکٹ | ATMEGA8535L-8PI | ATMEGA8535-16PJ | AT90S8535-8PI | ATMEGA32L-8PU | ATMEGA8515-16PI |
|---|---|---|---|---|---|---|
| Package | 40-PDIP (0.600 in, 15.24 mm) | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same | 40-PDIP - same |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology (Atmel legacy) | Microchip Technology | Microchip Technology |
| Flash Memory | 8 KB ISP | 8 KB ISP | 8 KB ISP | 8 KB | 32 KB ISP | 8 KB ISP |
| SRAM | 512 B | 512 B | 512 B | 512 B | 2 KB | 512 B |
| Max Clock Frequency | 8 MHz | 8 MHz | 16 MHz | 8 MHz | 8 MHz | 16 MHz |
| Supply Voltage | 2.7 V to 5.5 V (L grade) | 2.7 V to 5.5 V | 4.5 V to 5.5 V | 4.0 V to 6.0 V | 2.7 V to 5.5 V | 4.5 V to 5.5 V |
| 10-bit ADC | 8-channel | 8-channel | 8-channel | 8-channel | 8-channel | None |
| Operating Temperature | 0C to +70C (commercial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | 0C to +70C (commercial) | -40C to +85C (industrial) |
| Lifecycle Status | Active | Active | Active | Obsolete (ATmega8535 is its replacement) | Active | Active |
اہم امتیازی خصوصیات
- Low-voltage operation at 2.7 V (بمقابلہATMEGA8535-16PJ)
- Integrated 8-channel 10-bit ADC (بمقابلہATMEGA8515-16PI)
- Identical pinout across the whole family (بمقابلہATMEGA32L-8PU)
- Active lifecycle support (بمقابلہAT90S8535-8PI)
ڈیزائن نوٹس
Connect AVCC (pin 30) to VCC through a low-pass filter (for example a 10 uH inductor or ferrite bead plus 0.1 uF capacitor) when using the ADC, because AVCC powers both Port A and the converter. The device functions with ADC disabled even if AVCC is not connected, but the datasheet recommends never leaving AVCC floating when Port A is used as digital I/O. Keep AREF (pin 32) clean: use an external reference with a 100 nF decoupling capacitor, or select the internal reference via software - never connect an external voltage source directly when the internal reference is enabled.
For through-hole prototyping, place a 0.1 uF ceramic capacitor directly across VCC (pin 10) and GND (pin 11), plus one bulk 10 uF capacitor per board section. For the crystal, place the 8 MHz crystal and its two load capacitors (typically 12-22 pF depending on crystal specification) within 20 mm of XTAL1/XTAL2 (pins 13-12) and keep those traces short to avoid startup failure and jitter. Ground pin 31 (GND) and pin 11 both to the same low-impedance ground plane, since the ADC ground return shares these pins.
Two pitfalls recur with this device. First, verify the VCC-versus-frequency curve: the L grade permits 0-8 MHz only when supply voltage supports it per the datasheet speed chart - do not assume 8 MHz operation at the absolute minimum 2.7 V without checking the datasheet graph. Second, when migrating from AT90S8535, remember fuse-bit locations and electrical characteristics differ per the Microchip datasheet; program the S8535C compatibility fuse if needed. Also note PC2-PC7 carry JTAG and Timer2 oscillator functions - disable JTAG via fuse if you need all eight PORTC pins as general I/O.
ISP programming uses PB5/PB6/PB7 (MOSI/MISO/SCK, pins 6-8) and RESET (pin 9). Keep a 10 kOhm pull-up on RESET and an isolation resistor on SCK if external circuitry loads the SPI bus, otherwise the programmer may fail to enter programming mode. Flash endurance is 1,000 write/erase cycles, so avoid firmware routines that self-write constants to program memory at runtime; use EEPROM (also 1,000 cycles) for parameter storage and rotate writes across pages to extend lifetime.
تعمیل کی معلومات
Compliance status not explicitly stated in the provided web data; the modern Microchip-produced ATMEGA8535L-8PU is generally RoHS compliant, but verify on the Microchip product page before specifying.
