ATMEGA640-16CU vs ATMEGA640-16AU Comparison
Detailed side-by-side comparison of ATMEGA640-16CU by Microchip Technology and ATMEGA640-16AU by Microchip Technology. Compare key specifications, electrical parameters, packaging, lifecycle status, pricing, and availability to determine the best component for your design requirements.
Microchip Technology
ATMEGA640-16CU - 8-bit AVR MCU 16MHz 64KB CBGA-100 | Microchip
ATMEGA640-16CU ✓ ActiveMicrochip Technology
ATMEGA640-16AU - 8-bit AVR MCU 16MHz 64KB Flash | Microchip
ATMEGA640-16AU ✓ ActiveSpecification Comparison
| Parameter | ATMEGA640-16CU | ATMEGA640-16AU |
|---|---|---|
| Brand | Microchip Technology | Microchip Technology |
| Category | Microcontrollers | Microcontrollers |
| Lifecycle Status | Active | Active |
| Stock Status | In Stock | In Stock |
| Unit Price (USD) | $8.61 | $6.90 |
| Core Architecture | 8-bit AVR RISC | AVR Enhanced RISC (8-bit) |
| Maximum Clock Frequency | 16 MHz | 16 MHz |
| Program Memory Size (FLASH) | 64KB (32K x 16) | — |
| Program Memory Type | In-System Programmable FLASH | — |
| SRAM Size | 8KB | — |
| EEPROM Size | 4KB | — |
| Supply Voltage Range | 4.5 V to 5.5 V | — |
| I/O Ports / Lines | 53 I/O | — |
| Number of USARTs | 4 | — |
| ADC Resolution | 10-bit | — |
| ADC Channels | 8/16-channel (per datasheet family description) | — |
| Serial Interfaces | SPI, 2-wire (I2C-compatible TWI), USART | — |
| Watchdog Timer | Programmable, separate on-chip oscillator | — |
| Analog Comparator | On-chip | — |
| Package | 100-CBGA (9x9 mm) | 100-pin TQFP (14x14 mm) |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | Industrial temperature range (-40C to +85C) | -40C to +85C (industrial) |
| Data Bus Width | 8 Bit | — |
| RoHS / Green Status | Green package | — |
| Debug / Programming | ICSP via 2 I/O pins plus reset (MPLAB SNAP compatible) | — |
| Series | — | ATmega640 |
| Program Memory (Flash) | — | 64 KB (32K x 16) |
| SRAM | — | 8 KB |
| EEPROM | — | 4 KB |
| Throughput | — | ~16 MIPS |
| Supply Voltage | — | 2.7 V to 5.5 V |
| I/O Pins | — | 86 |
| ADC | — | 16 channels x 10-bit |
| PWM Channels | — | 16 |
| Timers/Counters | — | 6 |
| USART | — | 4 |
| SPI | — | 1 |
| TWI (I2C) | — | 1 |
| In-System Programming | — | Yes (ISP) |
| On-Chip Debug | — | JTAG |
| RoHS Status | — | Compliant |