ATMEGA32HVB-8X3 - 8-bit AVR MCU, 32KB Flash, 8MHz | Microchip
MPN: ATMEGA32HVB-8X3 ✓ Hoạt độngATMEGA32HVB-8X3 Tóm tắt
A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program and data memory, peripherals, and I/O on one die. The AVR 8-bit family is a Harvard-architecture core from Atmel (now Microchip) known for single-cycle execution, deterministic interrupt latency, and an orthogonal instruction set. Within the broader taxonomy, AVR sits under: 8-bit microcontroller -> microcontroller -> embedded processor -> semiconductor IC.
Key features include 131 powerful instructions (most single-cycle), 32 general-purpose I/O lines, an on-chip 8MHz calibrated oscillator, an internal bandgap reference, multiple timer/counters, USART, SPI, and a two-wire (I2C-compatible) interface. The 'HVB' variant integrates a high-voltage interface for direct battery-stack connection (typical operating supply 4.5V to 5.5V per the source data; the device is intended for 4-25V systems), supporting cell balancing, voltage/Current sensing, and protection without external high-side drivers.
Typical applications include lithium-ion battery management systems (BMS), portable power banks, e-bike and e-scooter battery packs, UPS modules, solar charge controllers, and smart battery monitoring with SMBus/HDQ communication. Industrial-grade temperature range makes it suitable for consumer chargers and light-industrial energy storage products. Compared with discrete BMS solutions using op-amps and ADCs, the HVB MCU reduces BOM, PCB area, and firmware complexity while adding configurable protection thresholds and on-chip data logging.
Bộ thay thế dễ dàng lắp đặt cho ATMEGA32HVB-8X3 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ATMEGA32HVB-8X3 (cùng hình factor và footprint) — khác nhau ở Package, Operating Temperature, Mounting Type, RoHS Status, Program Memory (Flash).
ATMEGA32HVB-8X4
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATMEGA64HVB
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ATMEGA16HVB-8X3R
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ATMEGA32C1-15AZ
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ATMEGA32HVB-8X3 Tỷ lệ tối đa & tính chất điện
| Core Architecture | AVR 8-bit RISC |
| Clock Speed | 8 MHz |
| Program Memory (Flash) | 32 KB (16K x 16) |
| SRAM | 2 KB |
| EEPROM | 1 KB |
| Supply Voltage (VHV) | 4.5 V to 5.5 V (operating range) |
| Battery Stack Voltage | 4 V to 25 V |
| I/O Pins | 32 |
| Hộp | 44-TSSOP |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | -40C to +85C (Industrial) |
| Instruction Set | 131 instructions, mostly single-cycle |
| MIPS Throughput | 8 MIPS at 8 MHz |
| Communication Interfaces | USART, SPI, Two-Wire (I2C-compatible) |
| Trạng thái RoHS | Compliant |
Cấu hình chân ATMEGA32HVB-8X3
| Chân 1 | VHV — High-voltage battery stack input |
| Chân 2 | PA0/ADC0 — Port A bit 0 / ADC channel 0 |
| Chân 3 | PA1/ADC1 — Port A bit 1 / ADC channel 1 |
| Chân 4 | PA2/ADC2 — Port A bit 2 / ADC channel 2 |
| Chân 5 | PA3/ADC3 — Port A bit 3 / ADC channel 3 |
| Chân 6 | PA4/ADC4 — Port A bit 4 / ADC channel 4 |
| Chân 7 | PA5/ADC5 — Port A bit 5 / ADC channel 5 |
| Chân 8 | PA6/ADC6 — Port A bit 6 / ADC channel 6 |
| Chân 9 | PA7/ADC7 — Port A bit 7 / ADC channel 7 |
| Chân 10 | GND — Ground |
| Chân 11 | VCC — +5V digital supply |
| Chân 12 | PB0 — Port B bit 0 |
| Chân 13 | PB1 — Port B bit 1 |
| Chân 14 | PB2 — Port B bit 2 |
| Chân 15 | PB3 — Port B bit 3 |
| Chân 16 | PB4 — Port B bit 4 |
| Chân 17 | PB5 — Port B bit 5 |
| Chân 18 | PB6 — Port B bit 6 |
| Chân 19 | PB7 — Port B bit 7 |
| Chân 20 | AVCC — Analog supply for ADC |
| Chân 21 | AREF8 — ADC reference voltage |
| Chân 22 | GND — Ground |
| Chân 23 | PC0 — Port C bit 0 |
| Chân 24 | PC1 — Port C bit 1 |
| Chân 25 | PC2 — Port C bit 2 |
| Chân 26 | PC3 — Port C bit 3 |
| Chân 27 | PC4 — Port C bit 4 |
| Chân 28 | PC5 — Port C bit 5 |
| Chân 29 | PC6 — Port C bit 6 |
| Chân 30 | PC7 — Port C bit 7 |
| Chân 31 | PD0/RXD — Port D bit 0 / USART RX |
| Chân 32 | PD1/TXD — Port D bit 1 / USART TX |
| Chân 33 | PD2/INT0 — Port D bit 2 / External interrupt 0 |
| Chân 34 | PD3/INT1 — Port D bit 3 / External interrupt 1 |
| Chân 35 | PD4 — Port D bit 4 |
| Chân 36 | PD5 — Port D bit 5 |
| Chân 37 | PD6 — Port D bit 6 |
| Chân 38 | PD7 — Port D bit 7 |
| Chân 39 | RESET — Reset input (active low) |
| Chân 40 | XTAL1 — Crystal oscillator input 1 |
| Chân 41 | XTAL2 — Crystal oscillator output 2 |
| Chân 42 | VHV2 — High-voltage battery stack tap 2 |
| Chân 43 | VHV3 — High-voltage battery stack tap 3 |
| Chân 44 | VHV4 — High-voltage battery stack tap 4 |
Ứng dụng tiêu biểu
ATMEGA32HVB-8X3 phù hợp cho 6 Áp dụngs: Lithium-Ion Battery Management System (BMS), Portable Power Bank with Smart Output, E-Bike and E-Scooter Battery Pack, Uninterruptible Power Supply (UPS) Module, Solar Charge Controller, Smart Battery Monitor with SMBus/HDQ.
Lithium-Ion Battery Management System (BMS)
The ATMEGA32HVB-8X3 is purpose-built for multi-cell lithium-ion and LiFePO4 battery packs, integrating a high-voltage interface that accepts 4-25 V stacks directly. Its on-chip cell-balancing drivers, voltage/current ADCs, and configurable protection thresholds let the MCU manage 4S-6S packs without external high-side FET drivers. The 32 KB Flash hosts cell-balancing algorithms, SOC estimation, and SMBus/HDQ firmware, while the 8 MHz core and 2 KB SRAM support state-of-health logging with 8 MIPS headroom. Compared with discrete BMS solutions using op-amps and standalone ADCs, the HVB reduces BOM, PCB area, and firmware complexity. The 44-TSSOP package is compact enough for portable packs yet offers 32 GPIO for status LEDs and pack-ID pins.
Được đề xuất
Portable Power Bank with Smart Output
The ATMEGA32HVB-8X3 powers smart power banks that monitor cell voltage, current, and temperature through its integrated ADCs. The high-voltage interface accepts 1S-6S configurations directly, eliminating external level shifters for the battery stack. Designers use the 8 MHz AVR core for USB-C PD negotiation helpers, fuel-gauge math, and OLED status display updates. The 32 GPIO drive status LEDs, button inputs, and load switches; USART/SPI/TWI communicate with charger ICs and USB-PD controllers. With industrial -40C to +85C operation, the device handles consumer and light-industrial charging environments. The 32 KB Flash supports USB-C PD firmware, protection algorithms, and LED animations without external memory.
Được đề xuất
E-Bike and E-Scooter Battery Pack
E-bike and e-scooter packs require reliable multi-cell monitoring under high discharge currents and harsh thermal environments. The ATMEGA32HVB-8X3's 4-25 V battery interface handles 5S-6S packs directly, while on-chip balancing drivers distribute heat across the cell stack rather than concentrating it on a single external FET. The industrial -40C to +85C temperature range and the 8 MHz AVR core provide deterministic interrupt latency for over-current protection, which is critical when pack currents exceed 20 A. The MCU's USART and Two-Wire interfaces expose SOC, SOH, and error flags to the motor controller and dashboard over CAN-bridge transceivers. The 32 KB Flash holds diagnostic logs and customizable firmware curves for different cell chemistries.
Được đề xuất
Uninterruptible Power Supply (UPS) Module
In small UPS modules the ATMEGA32HVB-8X3 monitors battery state-of-charge, switches between mains and battery, and logs power events. Its integrated voltage and current ADCs eliminate external sensing circuits, while the 4-25 V battery interface supports 12 V and 24 V backup battery stacks. The 8 MIPS throughput ensures fast AC-fail detection and graceful load shedding within one cycle of the 8 MHz core. The 32 GPIO drive status LEDs, relay controls, and audible alarms. The 32 KB Flash hosts event logs and user-configurable thresholds, with 2 KB SRAM providing buffer space for telemetry. Industrial temperature rating suits telecom closet and light-industrial UPS installations.
Được đề xuất
Solar Charge Controller
Solar charge controllers use the ATMEGA32HVB-8X3 to implement MPPT or PWM charging across 12 V or 24 V battery stacks. The 4-25 V battery interface directly accepts the panel voltage while on-chip ADCs measure panel and battery voltage, charge current, and load current. The 8 MHz AVR executes MPPT algorithms with deterministic timing and the 32 KB Flash stores adaptive charging profiles for lead-acid, Li-ion, and LiFePO4 chemistries. Two-Wire (I2C) interface exposes telemetry to remote displays, and USART supports RS-485 for industrial solar installations. Industrial -40C to +85C operation tolerates outdoor enclosures in direct sun, while 32 GPIO drive MOSFET gate drivers, fans, and status LEDs.
Được đề xuất
Smart Battery Monitor with SMBus/HDQ
The ATMEGA32HVB-8X3 acts as a smart battery monitor in medical carts, industrial forklifts, and test equipment where SMBus or HDQ reporting is required. Its USART and Two-Wire interfaces deliver the physical layer for SMBus v1.1 and HDQ protocols, while the integrated high-voltage interface handles cell stacks up to 25 V. The 32 KB Flash hosts the smart-battery data specification (SBDS) command set plus manufacturer-specific status registers. The 1 KB EEPROM stores cycle count, manufacture date, and chemistry ID without external memory. Industrial temperature grade and 32 GPIO provide flexibility for safety LEDs, fault relays, and pack-ID strapping.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ATMEGA32HVB-8X3 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | ATMEGA32HVB-8X4 | ATMEGA64HVB | ATMEGA16HVB |
|---|---|---|---|---|
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Package | 44-TSSOP | 44-TSSOP - same | 44-TSSOP - same | 44-TSSOP - same |
| Program Memory (Flash) | 32 KB | 32 KB | 64 KB | 16 KB |
| SRAM | 2 KB | 2 KB | 4 KB | 1 KB |
| EEPROM | 1 KB | 1 KB | 2 KB | 512 B |
| Maximum Clock Speed | 8 MHz | 8 MHz | 8 MHz | 8 MHz |
| Battery Stack Voltage | 4 V to 25 V | 4 V to 25 V | 4 V to 25 V | 4 V to 25 V |
| Tape & Reel Quadrant | X3 | X4 (different quadrant) | varies by suffix | varies by suffix |
Bảo phân biệt quan trọng
- Integrated high-voltage battery interface (4-25 V) (vsATMEGA32A-AU (general-purpose AVR))
- On-chip cell balancing and battery ADCs (vsATMEGA328P-PU (general-purpose AVR in DIP-28))
- 44-TSSOP package fits dense battery packs (vsATMEGA32-16PU (40-DIP through-hole))
Ghi chú thiết kế
Decouple VCC with a 100 nF ceramic capacitor placed within 5 mm of the VCC pin, plus a bulk 10 uF tantalum or ceramic on the AVCC rail. The internal ADC reference (AREF8) requires its own 100 nF decoupling capacitor. For battery applications, route VHV through a 100-ohm series resistor and a TVS clamp to absorb load-dump transients typical of 12-24 V lead-acid or Li-ion stacks.
In TSSOP-44 packages, theta_JA is approximately 80-90 C/W with standard JEDEC 4-layer test board. Estimated: at VHV=18 V, VCC derived via internal regulator drawing 25 mA, internal dissipation is ~0.45 W, giving a junction rise of ~36-40 C above ambient. Industrial 85 C ambient yields ~125 C junction - within spec, but no margin. Add copper pour on VCC and GND pins and vias to internal ground planes to reduce theta_JA in enclosed battery packs.
Route the high-voltage VHV/VHV2-VHV4 traces with at least 0.5 mm clearance to low-voltage signals and 1 mm to user-accessible pins per IPC-2221. Place the MCU away from the switching node of any buck/boost charger IC to avoid conducted EMI. Keep ADC traces (PA0-PA7) short and guarded by ground pours; the integrated 8-channel ADC is sensitive to digital switching noise on adjacent Port C pins.
Do not assume the 8 MHz internal oscillator is accurate enough for SMBus timing - it has +/- 2% factory calibration but drifts +/- 5% across temperature. For SMBus or UART above 38.4 kbaud, use an external crystal on XTAL1/XTAL2. Also, the AVR's EEPROM write cycles (100k endurance) mean that frequent SOC logging will wear out the EEPROM - use wear-leveling or store cyclic counters in Flash instead.
Thông tin tuân thủ
RoHS and REACH compliance per Microchip product page. Industrial temperature grade (-40C to +85C); not AEC-Q100 qualified - this is a battery MCU, not an automotive-grade part. Lead-free reflow profile per JEDEC J-STD-020.
