Part A
ADUC848BSZ62-3
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5759 PCS
- Package
- QFP-52
- Series
- Embedded - Microcontrollers
Replacement verdict
Compatible functional replacement candidate
The ADUC848BSZ62-3 and ADUC832BS are both MicroConverter 12-bit ADC with embedded 8-bit MCU devices from the same Analog Devices ADuC8xx family, sharing a common architecture and 8051-compatible core. However, they differ in on-chip memory density, ADC channel count, and available peripheral features, so the ADUC832BS can serve as a functional substitute only where the reduced flash/SRAM and lower analog input count are acceptable. Designers should validate memory headroom, analog channel requirements, and package footprint before committing to a drop-in replacement.
On-Chip Memory Density
Validation required
ADC Channel Count
Validation required
Core Architecture
High match
Package Type
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 | ADUC832BS | Why it matters |
|---|---|---|---|
| Core / CPU | 8052 (8-bit, up to 12.58 MHz) | 8052 (8-bit, up to 16.78 MHz) | Both use an 8052 core, but the ADUC832 supports a higher maximum clock, affecting throughput and timing of peripherals. |
| Program Memory (Flash) | 62 kB | 32 kB | Flash size determines how much application code can be stored on-chip; the ADUC848 offers nearly double the program space. |
| Data Memory (SRAM) | 2.3 kB | 2.3 kB | On-chip SRAM holds runtime variables and stack; identical SRAM means similar runtime memory headroom. |
| ADC Resolution / Channels | 16-bit sigma-delta, up to 10 channels | 12-bit SAR, up to 8 channels | The ADC type and resolution directly affect measurement precision and the number of analog inputs available for sensor interfaces. |
| DAC | 12-bit voltage output DAC (1 channel) | 12-bit voltage output DAC (1 channel) | An on-chip DAC enables analog output generation; both provide a single 12-bit DAC channel. |
| Supply Voltage | 3 V (2.7 V to 3.6 V) | 5 V (4.5 V to 5.5 V) | Operating voltage must match the system rail; the ADUC848 is a 3 V part while the ADUC832 is a 5 V part, so they are not drop-in power compatible. |
| UART / Serial Ports | 1 UART, plus SPI and I2C | 1 UART, plus SPI and I2C | Serial interfaces determine connectivity options; both offer UART, SPI, and I2C for peripheral communication. |
| Package | 52-lead MQFP | 52-lead MQFP | Package and pin count affect PCB footprint and layout compatibility; identical packages simplify board redesign. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range determines suitability for industrial environments; both cover the standard industrial range. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADUC848BSZ62-3 | ADUC832BS |
|---|---|---|
| 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 | 16MHz |
| Connectivity | I²C, SPI, UART/USART | EBI/EMI, 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) | 62KB (62K x 8) |
| Program Memory Type | FLASH | FLASH |
| EEPROM Size | 4K x 8 | 4K x 8 |
| RAM Size | 2.25K x 8 | 2.25K 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 8x12b; D/A 2x12b |
| Oscillator Type | Internal | Internal |
| Operating Temperature | -40°C ~ 125°C (TA) | -40°C ~ 125°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the core differences between the ADUC848BSZ62-3 and the ADUC832BS?
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 ADUC832BS is a MicroConverter with 62 kB Flash program memory and 2 kB SRAM, operating from a 5 V supply. Both integrate a 12-bit ADC, but the ADUC848BSZ62-3 adds dual 16-bit sigma-delta DACs and a 12-bit voltage output DAC, while the ADUC832BS provides a single 12-bit voltage output DAC.
Are the ADUC848BSZ62-3 and ADUC832BS pin-to-pin compatible?
No. The ADUC848BSZ62-3 is supplied in a 52-lead MQFP package, while the ADUC832BS is supplied in a 52-lead MQFP package as well, but the two devices differ in supply voltage and peripheral set, so pin functions and external component requirements are not identical. A direct drop-in replacement should not be assumed without validating the pinout and supply requirements against the respective datasheets.
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 ADUC832BS operates from a 5 V supply (4.5 V to 5.5 V range). The supply voltage difference is a critical consideration when comparing or substituting these parts in a design.
How do the ADC specifications compare between the two parts?
Both devices integrate a 12-bit successive-approximation ADC. The ADUC848BSZ62-3 provides a 12-bit ADC with up to 8 single-ended or 4 differential input channels. The ADUC832BS provides a 12-bit ADC with up to 8 single-ended or 4 differential input channels as well. The ADC core resolution is the same, but overall analog performance should be verified against each datasheet for the specific operating conditions.
What DAC capabilities does each device offer?
The ADUC848BSZ62-3 includes dual 16-bit sigma-delta DACs and a 12-bit voltage output DAC. The ADUC832BS includes a single 12-bit voltage output DAC. Designs requiring dual 16-bit DAC outputs should select the ADUC848BSZ62-3, while the ADUC832BS is limited to a single 12-bit voltage output DAC.
How much on-chip memory does each device provide?
The ADUC848BSZ62-3 provides 62 kB Flash program memory, 4 kB Flash data memory, and 2 kB SRAM. The ADUC832BS provides 62 kB Flash program memory and 2 kB SRAM. The ADUC848BSZ62-3 offers additional 4 kB Flash data memory that the ADUC832BS does not provide.
Can the ADUC832BS be used as a direct substitute for the ADUC848BSZ62-3?
No. The two devices differ in supply voltage (3 V vs 5 V), DAC configuration (dual 16-bit sigma-delta plus 12-bit voltage output vs single 12-bit voltage output), and on-chip Flash data memory (4 kB vs none). A substitution requires revalidation of the power supply, analog output requirements, memory usage, and pin configuration against the target design and the respective manufacturer datasheets.
What package type do these devices use?
Both the ADUC848BSZ62-3 and the ADUC832BS are offered in a 52-lead MQFP package. Package compatibility alone does not guarantee functional interchangeability, so the supply voltage and peripheral differences must still be evaluated.