Part A
ADUC848BSZ62-3
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5759 ПКС
- Package
- QFP-52
- Series
- Встроенные - микроконтроллеры
Replacement verdict
Compatible functional replacement candidate
The ADUC848BSZ62-3 and ADUC824BS are both MicroConverter 12-bit ADC with embedded 8051 MCU devices from Analog Devices, sharing a common architecture and core function. However, they differ in on-chip memory density, analog input channel count, and package footprint, so the ADUC824BS can serve as a functional substitute only after validating memory headroom, channel requirements, and board layout against the target design.
Flash Memory Size
Validation required
Analog Input Channel Count
Validation required
Package Type
Validation required
Core Architecture
High match
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 | ADUC824BS | 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 toolchain compatibility are preserved for firmware reuse. |
| Program Memory (Flash) | 62 kB on-chip Flash | 8 kB on-chip Flash | Program memory size determines how much application code can be stored; a large difference affects whether existing firmware fits without redesign. |
| On-chip RAM | 2 kB | 256 bytes | RAM capacity limits data buffers and stack usage; a smaller RAM may require code restructuring for the same application. |
| ADC Resolution | 16-bit sigma-delta ADC | 24-bit sigma-delta ADC | ADC resolution directly affects measurement precision; the 24-bit part offers higher resolution for low-level signal acquisition. |
| Number of ADC Channels | 10 single-ended / 5 differential | 8 single-ended / 4 differential | Channel count determines how many analog signals can be measured; fewer channels may require external multiplexing. |
| Supply Voltage | 3 V (3.0 V to 3.6 V) | 3 V / 5 V (2.7 V to 5.5 V) | Operating voltage range affects system power design and compatibility with surrounding logic and analog front ends. |
| DAC Outputs | 12-bit voltage DAC | 12-bit voltage DAC | Both provide a 12-bit DAC for analog output; matching resolution supports similar control-loop and setpoint applications. |
| Package | 52-lead MQFP | 52-lead MQFP | Package and pin count affect PCB footprint and layout; identical packages simplify board-level substitution. |
| UART / Serial Interface | UART, SPI, I2C | UART, SPI, I2C | Serial interfaces determine connectivity to sensors, memory, and host systems; matching interfaces ease drop-in replacement. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range indicates suitability for industrial environments; matching ranges support the same application conditions. |
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 | ADUC824BS |
|---|---|---|
| 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 | EBI/EMI, I²C, SPI, UART/USART |
| Peripherals | POR, PSM, PWM, Temp Sensor, WDT | POR, 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 ~ 5.25V |
| Data Converters | A/D 10x16b; D/A 1x12b, 2x16b | A/D 3x16b, 4x24b; 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 key differences between the ADUC848BSZ62-3 and the ADUC824BS?
The ADUC848BSZ62-3 is a MicroConverter® 12-bit ADC with embedded 62 kB Flash, 2 kB EEPROM, and 4 kB RAM, operating from a 3 V supply, while the ADUC824BS is a MicroConverter with 8 kB Flash, 640 B EEPROM, and 256 B RAM, operating from a 3 V or 5 V supply. The ADUC848BSZ62-3 offers larger memory and a higher-resolution ADC, whereas the ADUC824BS provides a smaller footprint and lower memory density for simpler applications.
Are the ADUC848BSZ62-3 and ADUC824BS pin-compatible?
No. The ADUC848BSZ62-3 is supplied in a 52-lead MQFP package, while the ADUC824BS is supplied in a 52-lead PQFP package. Although both are 52-lead packages, the pinouts and package outlines differ per the respective Analog Devices datasheets, so they are not drop-in replacements.
What is the ADC resolution of each device?
The ADUC848BSZ62-3 integrates a 12-bit successive-approximation ADC. The ADUC824BS integrates a 24-bit sigma-delta ADC. The two devices therefore target different signal-chain requirements: the ADUC848BSZ62-3 suits general-purpose 12-bit monitoring, while the ADUC824BS suits high-resolution, low-frequency measurement.
How do the on-chip memory specifications compare?
The ADUC848BSZ62-3 provides 62 kB of Flash program memory, 4 kB of RAM, and 2 kB of EEPROM. The ADUC824BS provides 8 kB of Flash program memory, 256 B of RAM, and 640 B of EEPROM. The ADUC848BSZ62-3 therefore supports substantially larger firmware and data storage.
What supply voltage ranges do these devices support?
The ADUC848BSZ62-3 operates from a 3 V supply (2.7 V to 3.6 V). The ADUC824BS operates from either a 3 V or 5 V supply, per its datasheet. Designs migrating between the two must verify that the system supply matches the selected device's specified operating range.
Can the ADUC824BS be used as a direct substitute for the ADUC848BSZ62-3?
No. Beyond the package and pinout differences, the ADUC824BS has significantly less Flash, RAM, and EEPROM and a different ADC architecture (24-bit sigma-delta versus 12-bit SAR). Firmware, memory mapping, and analog front-end design would all require revalidation against the ADUC824BS datasheet before substitution.
Do both devices include an on-chip temperature sensor and UART/SPI/I2C serial interfaces?
Yes. Both the ADUC848BSZ62-3 and ADUC824BS integrate an on-chip temperature sensor and include UART, SPI, and I2C serial interfaces, as documented in their respective Analog Devices datasheets. Peripheral timing and register maps should still be checked individually when porting firmware between the two.