Overview
The ADUC845BSZ62-3 is a MicroConverter® integrated circuit manufactured by Analog Devices Inc. It is part of the ADuC845, ADuC847, and ADuC848 family, which are single-cycle, 12.58 MIPs upgrades to the ADuC834 and ADuC836 series. These devices integrate high-resolution Σ-Δ ADCs with a fast 8-bit MCU and program and data Flash/EE memory on a single chip, making them complete smart transducer front ends.
Key Specifications
| Parameter | Value | Unit | Comments |
|---|---|---|---|
| Core Processor | 8052 core | - | Single-cycle, 12.58 MHz |
| ADC Resolution | 24-bit (primary and auxiliary) | - | No missing codes, 22-bit rms (19.5 bit p-p) effective resolution |
| ADC Input Channels | Up to 10 | - | Flexible input multiplexing |
| Memory | 62 kbytes Flash/EE program memory, 4 kbytes Flash/EE data memory, 2304 bytes data RAM | - | 100-year retention, 100 kcycle endurance |
| Package and Temperature Range | 52-lead MQFP, −40°C to +125°C | - | Lead Free |
| Power Supply | 3 V or 5 V nominal | V | Normal mode: 4.8 mA max at 3.6 V; Power-down: 20 μA max with wake-up timer running |
| Timers and Counters | 3 × 16-bit timer/counter | - | - |
| Serial I/O | UART, SPI®, and I2C® | - | High speed dedicated baud rate generator |
Key Features
- High resolution Σ-Δ ADCs with internal buffering and PGA on the primary ADC.
- Flexible input multiplexing and programmable output data rates.
- On-chip temperature sensor (ADuC845 only).
- Dual excitation current sources (200 μA).
- On-chip programmable PLL (12.58 MHz max) and 32 kHz external crystal.
- 24 programmable I/O lines, plus 8 analog or digital input lines.
- 11 interrupt sources, two priority levels, and dual data pointer.
- Internal power-on reset circuit, watchdog timer (WDT), and power supply monitor (PSM).
- In-circuit serial download and debug modes via UART, and single-pin emulation mode via the EA pin.
Applications
- Multichannel sensor monitoring.
- Industrial/environmental instrumentation.
- Weigh scales, pressure sensors, and temperature monitoring.
- Portable instrumentation and battery-powered systems.
- Data logging and precision system monitoring.
Q & A
- What is the core processor of the ADUC845BSZ62-3?
The core processor is an 8052 core, operating at 12.58 MHz in single-cycle mode.
- How many ADC input channels does the ADUC845BSZ62-3 support?
Up to 10 ADC input channels with flexible input multiplexing.
- What is the resolution of the ADCs in the ADUC845BSZ62-3?
The ADCs have a 24-bit resolution with no missing codes and 22-bit rms (19.5 bit p-p) effective resolution.
- What types of memory are available on the ADUC845BSZ62-3?
62 kbytes Flash/EE program memory, 4 kbytes Flash/EE data memory, and 2304 bytes data RAM.
- What is the operating temperature range of the ADUC845BSZ62-3?
The operating temperature range is −40°C to +125°C.
- What are the power supply options for the ADUC845BSZ62-3?
The device can operate at 3 V or 5 V nominal power supply.
- Does the ADUC845BSZ62-3 have on-chip peripherals?
Yes, it includes on-chip peripherals such as UART, SPI®, I2C®, timers, counters, and more.
- What are some common applications of the ADUC845BSZ62-3?
Common applications include multichannel sensor monitoring, industrial/environmental instrumentation, weigh scales, pressure sensors, temperature monitoring, and data logging.
- Does the ADUC845BSZ62-3 support in-circuit serial download?
Yes, it supports in-circuit serial download and debug modes via UART.
- What is the package type of the ADUC845BSZ62-3?
The package type is a 52-lead MQFP (14 mm × 14 mm).
