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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
| ABOSOLUTE MAXIMUM RATINGS | |
| TA = 25°C, unless otherwise noted. | |
| Parameter | Rating |
| AVDD to AGND | –0.3 V to +7 V |
| AVDD to DGND | –0.3 V to +7 V |
| DVDD to DGND | –0.3 V to +7 V |
| DVDD to DGND | –0.3 V to +7 V |
| AGND to DGND1 | –0.3 V to +0.3 V |
| AVDD to DVDD | –2 V to +5 V |
| Analog Input Voltage to AGND2 | –0.3 V to AVDD + 0.3 V |
| Reference Input Voltage to AGND | –0.3 V to AVDD + 0.3 V |
| AIN/REFIN Current (Indefinite) | 30 mA |
| Digital Input Voltage to DGND | –0.3 V to DVDD + 0.3 V |
| Digital Output Voltage to DGND | –0.3 V to DVDD + 0.3 V |
| Operating Temperature Range | –40°C to +125°C |
| Storage Temperature Range | –65°C to +150°C |
| Junction Temperature | 150°C |
| θJA Thermal Impedance (MQFP) | 90°C/W |
| θJA Thermal Impedance (LFCSP) | 52°C/W |
| Lead Temperature, Soldering | 215°C |
| Vapor Phase (60 sec) | |
| Infrared (15 sec) | 220°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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