ADUC847 Analog Devices, ADUC847 Datasheet - Page 15

• Manufacturer Part Number: ADUC847
• Description: Precision Analog Microcontroller: 12MIPS 8052 Flash MCU + 10-Ch 24-Bit ADC + 12-Bit DAC
• Manufacturer: Analog Devices

Specifications of ADUC847

• Mcu Core: 8052
• Mcu Speed (mips): 12
• Sram (bytes): 2304Bytes
• Gpio Pins: 34
• Adc # Channels: 10
• Other: PWM

GENERAL DESCRIPTION
The AD
12.58 M
ADuC836. They include additional analog inputs for
applications requiring more ADC channels.
The ADuC845, ADuC847, and ADuC848 are complete smar
transducer front ends. The family integrates high resolution
Σ-Δ ADCs with flexible, up to 10-channel, input multiplexing, a
f
sin
The ADuC845 includes two (primary and auxiliary) 24-bit Σ-Δ
ADCs with internal buffering and PGA on the primary ADC.
The ADuC847 includes the same primary ADC as the ADuC845
(auxiliary ADC removed). The ADuC848 is a 16-bit ADC
version of the ADuC847.
The ADCs incorporate flexible input multiplexing, a temperature
sensor (ADuC845 only), and a PGA (primary ADC only)
allowing direct measurement of low-level signals. The ADCs
include on-chip digital filtering and programmable output data
rates that are intended for measuring wide dynamic range and
low frequency signals, such as those in weigh scale, strain gage,
pressure transducer, or temperature measurement applications.
ast 8-bit MCU, and program and data Flash/EE memory on a
gle chip.
uC84
IPs, 8052 core upgr es to the ADuC834 and
5, ADuC84 and ADuC
7,
ad
848 are singl
e-cyc
le,
Rev. B | Page 15 of 108
t
The devices operate from a 32 kHz crystal with an on-chip PL
generating a high frequency clock of 12.58 MHz. This clock is
routed through a programmable clock divider from which the
MCU core clock operating frequency is generated. The micro-
controller core is an optimized single-cycle 8052 offering
12.58 MIPs performance while maintaining 8051 instruction set
compatibility.
The available nonvolatile Flash/EE program memory options
are 62 kbytes, 32 kbytes, and 8 kbytes. 4 kbytes of nonvolatile
Flash/EE data memory and 2304 bytes of data RAM are also
provided on-chip. The program memory can be configured as
data memory to give up to 60 kbytes of NV data memory in
data logging applications.
On-chip factory firmware supports in-circuit serial download
and debug modes (via UART), as well as single-pin emulation
mode via the EA
are supported by the QuickStart™ development system featuring
low cost software and hardware development tools.
pin. The ADuC845, ADuC847, and ADuC848
ADuC845/ADuC847/ADuC848
up to
L