Part A
ADUC848BSZ62-3
ADI公司
- Lifecycle
- Active
- Stock
- 5759 件
- Package
- QFP-52
- Series
- 嵌入式-微控制器
Replacement verdict
Compatible functional replacement candidate
The ADUC848BSZ62-3 and ADUC816BS are both single-cycle 8051-core precision analog microcontrollers from Analog Devices with integrated multichannel sigma-delta ADCs, but they differ in flash memory density, ADC resolution and channel count, and on-chip peripheral integration. The ADUC848BSZ62-3 offers a closer functional overlap for designs requiring higher code storage and 24-bit ADC performance, while the ADUC816BS remains a viable candidate only where its 16-bit ADC resolution and reduced memory footprint are acceptable. Package and supply-voltage compatibility should be confirmed against the target board before substitution.
ADC Resolution and Channel Count
Validation required
Program Memory Density
Validation required
Core Architecture
High match
Package and Pin Configuration
Validation required
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADUC848BSZ62-3 | ADUC816BS | Why it matters |
|---|---|---|---|
| Core Architecture | 8052-compatible 8-bit MCU core | 8052-compatible 8-bit MCU core | Both use the same 8052 core, so instruction set and firmware structure are compatible. |
| Program Memory (Flash) | 62 kB Flash | 8 kB Flash | Larger on-chip program memory allows more complex firmware without external memory. |
| On-Chip RAM | 2 kB | 256 B | More RAM supports larger data buffers and more complex application code. |
| ADC Resolution | 16-bit sigma-delta ADC | 16-bit sigma-delta ADC | Both provide high-resolution analog-to-digital conversion suitable for precision sensing. |
| Number of ADC Channels | 10 single-ended / 5 differential | 8 single-ended / 4 differential | More input channels allow monitoring of additional analog signals. |
| Supply Voltage | 3 V (2.7 V to 3.6 V) | 5 V (4.75 V to 5.25 V) | Different supply rails affect system power design and level compatibility. |
| DAC Outputs | 12-bit voltage DAC | 12-bit voltage DAC | On-chip DAC enables analog output generation without external components. |
| UART Interface | 1 UART | 1 UART | Serial communication capability for host interfacing and diagnostics. |
| Package | 52-lead MQFP | 52-lead MQFP | Same package footprint simplifies board-level substitution. |
| Operating Temperature Range | -40 °C to +125 °C | -40 °C to +85 °C | Wider temperature range supports harsher industrial environments. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADUC848BSZ62-3 | ADUC816BS |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Series | MicroConverter® ADuC8xx | MicroConverter® ADuC8xx |
| Part Status | Active | Obsolete |
| Core Processor | 8052 | 8052 |
| Core Size | 8-Bit | 8-Bit |
| Speed | 12.58MHz | 12.58MHz |
| Connectivity | I²C, SPI, UART/USART | I²C, SPI, UART/USART |
| Peripherals | POR, PSM, PWM, Temp Sensor, WDT | PSM, Temp Sensor, WDT |
| Number of I/O | 34 | 34 |
| Program Memory Size | 62KB (62K x 8) | 8KB (8K x 8) |
| Program Memory Type | FLASH | FLASH |
| EEPROM Size | 4K x 8 | 640 x 8 |
| RAM Size | 2.25K x 8 | 256 x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.7V ~ 3.6V | 2.7V ~ 5.5V |
| Data Converters | A/D 10x16b; D/A 1x12b, 2x16b | A/D 7x16b; D/A 1x12b |
| Oscillator Type | Internal | Internal |
| Operating Temperature | -40°C ~ 125°C (TA) | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the core differences between the ADUC848BSZ62-3 and the ADUC816BS?
The ADUC848BSZ62-3 is a MicroConverter with a 62 kB Flash program memory, 4 kB Flash data memory, and 2 kB SRAM, operating from a 3 V supply. The ADUC816BS is a MicroConverter with 8 kB Flash program memory and 640 bytes of on-chip SRAM, operating from a 5 V supply. The ADUC848BSZ62-3 offers significantly larger memory and a lower supply voltage, while the ADUC816BS is a smaller-memory, 5 V device.
Are the ADUC848BSZ62-3 and ADUC816BS pin-compatible?
No. The ADUC848BSZ62-3 is supplied in a 52-lead MQFP package, while the ADUC816BS is supplied in a 52-lead PQFP package. Although both are 52-lead packages, the pin functions and land patterns differ between the two devices, so they are not directly interchangeable on the same PCB footprint without design verification.
What are the ADC resolutions of the ADUC848BSZ62-3 and ADUC816BS?
The ADUC848BSZ62-3 integrates a 24-bit sigma-delta ADC (primary) plus a 12-bit DAC and a 12-bit ADC. The ADUC816BS integrates a 24-bit sigma-delta ADC (primary) plus a 12-bit DAC. Both devices are primarily 24-bit sigma-delta converters, but the ADUC848BSZ62-3 additionally provides a 12-bit auxiliary ADC.
What supply voltage does each device require?
The ADUC848BSZ62-3 operates from a 3 V supply (2.7 V to 3.6 V range). The ADUC816BS operates from a 5 V supply (4.75 V to 5.25 V range). The supply voltage difference is a critical consideration when comparing or substituting these parts.
How do the on-chip memory sizes compare between the ADUC848BSZ62-3 and ADUC816BS?
The ADUC848BSZ62-3 provides 62 kB of Flash program memory, 4 kB of Flash data memory, and 2 kB of SRAM. The ADUC816BS provides 8 kB of Flash program memory and 640 bytes of SRAM. The ADUC848BSZ62-3 offers substantially more program and data memory for larger firmware applications.
Do both devices include an on-chip temperature sensor and reference?
Yes. Both the ADUC848BSZ62-3 and the ADUC816BS integrate an on-chip temperature sensor and an on-chip voltage reference, which are common features of the ADuC8xx MicroConverter family for precision analog measurement applications.
Can the ADUC816BS be used as a drop-in replacement for the ADUC848BSZ62-3?
No. The two devices differ in supply voltage (5 V vs 3 V), package type (PQFP vs MQFP), memory size (8 kB vs 62 kB Flash), and peripheral set (the ADUC848BSZ62-3 includes an additional 12-bit ADC). A drop-in replacement is not possible; any substitution requires full schematic, firmware, and PCB layout validation against the manufacturer datasheets.