ADUC848BSZ32-5v

IC MCU 8BIT 32KB FLASH 52MQFP 12.58MHz chip

FEATURES

High resolution Σ-Δ ADCs

2 independent 24-bit ADCs on the ADuC845

Single 24-bit ADC on the ADuC847 and

single 16-bit ADC on the ADuC848

Up to 10 ADC input channels on all parts

24-bit no missing codes

22-bit rms (19.5 bit p-p) effective resolution

Offset drift 10 nV/°C, gain drift 0.5 ppm/°C chop enabled

Memory

62-kbyte on-chip Flash/EE program memory

4-kbyte on-chip Flash/EE data memory

Flash/EE, 100-year retention, 100 kcycle endurance

3 levels of Flash/EE program memory security

In-circuit serial download (no external hardware)

High speed user download (5 sec)
2304 bytes on-chip data RAM

8051-based core

8051-compatible instruction set

High performance single-cycle core

32 kHz external crystal

On-chip programmable PLL (12.58 MHz max)

3 × 16-bit timer/counter

24 programmable I/O lines, plus 8 analog or digital input lines

11 interrupt sources, two priority levels

Dual data pointer, extended 11-bit stack pointer On-chip peripherals

Internal power-on reset circuit

12-bit voltage output DAC

Dual 16-bit Σ-Δ DACs

On-chip temperature sensor (ADuC845 only)

Dual excitation current sources (200 µA)

Time interval counter (wake-up/RTC timer)

UART, SPI®, and I2C® serial I/O

High speed dedicated baud rate generator (incl. 115,200)

Watchdog timer (WDT)
Power supply monitor (PSM)

Power

Normal: 4.8 mA max @ 3.6 V (core CLK = 1.57 MHz)

Power-down: 20 µA max with wake-up timer running

Specified for 3 V and 5 V operation

Package and temperature range:

52-lead MQFP (14 mm × 14 mm), −40°C to +125°C

56-lead LFCSP (8 mm × 8 mm), −40°C to +85°C

APPLICATIONS

Multichannel sensor monitoring

Industrial/environmental instrumentation

Weigh scales, pressure sensors, temperature monitoring

Portable instrumentation, battery-powered systems
Data logging, precision system monitoring

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