IC MCU 8BIT 62KB FLASH 52MQFP
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The ADuC834 is a complete smart transducer front end,integrating two high resolution - ADCs, an 8-bit MCU, andprogram/data Flash/EE memory on a single chip.
The two independent ADCs (primary and auxiliary) include atemperature sensor and a PGA (allowing direct measurement oflow level signals). The ADCs with on-chip digital filtering andprogrammable output data rates are intended for the measurementof wide dynamic range, low frequency signals, such as those inweigh scale, strain-gage, pressure transducer, or temperaturemeasurement applications.
The device operates from a 32 kHz crystal with an on-chip PLLgenerating a high frequency clock of 12.58 MHz. This clock isrouted through a programmable clock divider from which the MCUcore clock operating frequency is generated. The microcontrollercore is an 8052 and therefore 8051 instruction set compatiblewith 12 core clock periods per machine cycle.
62 Kbytes of nonvolatile Flash/EE program memory, 4 Kbytes ofnonvolatile Flash/EE data memory, and 2304 bytes of data RAMare provided on-chip. The program memory can be configuredas data memory to give up to 60 Kbytes of NV data memory indata logging applications.
On-chip factory firmware supports in-circuit serial download anddebug modes (via UART), as well as single-pin emulation modevia the EA pin. The ADuC834 is supported by a QuickStart™development system featuring low cost software and hardwaredevelopment tools.
Applications
Core Processor 8052
Speed 12.58MHz
Operating Temperature -40℃ ~ 125℃ (TA)
Program Memory Type FLASH
RAM Size 2.25K x 8
Number of I/O 34
Peripherals POR, PSM, PWM, Temp Sensor, WDT
Mounting Type Surface Mount
Oscillator Type Internal
Supplier Device Package 52-MQFP (10x10)
EEPROM Size 4K x 8
Package / Case 52-QFP
Core Size 8-Bit
Connectivity EBI/EMI, I2C, SPI, UART/USART
Program Memory Size 62KB (62K x 8)
Data Converters A/D 3x16b, 4x24b; D/A 1x12b
Voltage - Supply (Vcc/Vdd) 2.7V ~ 5.25V
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