ADuC834 Datasheet Text
a MicroConverter®, Dual 16-Bit/24-Bit ⌺-⌬ ADCs with Embedded 62 kB Flash MCU
ADuC834
Features
High Resolution ⌺-⌬ ADCs
2 Independent ADCs (16-Bit and 24-Bit Resolution) 24-Bit No Missing Codes, Primary ADC 21-Bit rms (18.5-Bit p-p) Effective Resolution @ 20 Hz Offset Drift 10 nV/؇C, Gain Drift 0.5 ppm/؇C Memory 62 Kbytes On-Chip Flash/EE Program Memory 4 Kbytes On-Chip Flash/EE Data Memory Flash/EE, 100 Year Retention, 100 Kcycles Endurance 3 Levels of Flash/EE Program Memory Security In-Circuit Serial Download (No External Hardware) High Speed User Download (5 Seconds) 2304 Bytes On-Chip Data RAM 8051-Based Core 8051 patible Instruction Set 32 kHz External Crystal On-Chip Programmable PLL (12.58 MHz Max) 3 ؋ 16-Bit Timer/Counter 26 Programmable I/O 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 ⌺-⌬ DACs/PWMs On-Chip Temperature Sensor Dual Excitation Current Sources Time Interval Counter (Wake-Up/RTC Timer) UART, SPI®, and I2C® Serial I/O High Speed Baud Rate Generator (Including 115,200) Watchdog Timer (WDT) Power Supply Monitor (PSM) Power Normal: 2.3 mA Max @ 3.6 V (Core CLK = 1.57 MHz) Power-Down: 20 A 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 Intelligent Sensors Weigh Scales Portable Instrumentation, Battery-Powered Systems 4- 20 mA Transmitters Data Logging Precision System Monitoring
REV. B
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