ADUC814_02 Datasheet, PDF (1/16 Pages) Analog Devices – MicroConverter, Small Package 12-Bit ADC with Embedded FLASH MCU

a
MicroConverter^®, Small Package
12-Bit ADC with Embedded FLASH MCU
ADuC814
FEATURES
Analog I/O
6-Channel 247 kSPS ADC
12-Bit Resolution
ADC High Speed Data Capture Mode
Programmable Reference via On-Chip DAC for Low
Level Inputs
ADC Performance Down to V_REF of 0.1 V
Dual-Voltage Output DACs
12-Bit Resolution, 15 ␮s Settling Time
Memory
8 KBytes On-Chip Flash/EE Program Memory
640 Bytes On-Chip Flash/EE Data Memory
Flash/EE, 100-Year Retention, 100 K Cycles
Endurance
Three Levels of Flash/EE Program Memory Security
In-Circuit Serial Download (No External Hardware
Required)
256 Bytes On-Chip Data RAM
8051 Based Core
8051 Compatible Instruction Set
32 kHz External Crystal
On-Chip Programmable PLL (16.78 MHz Max)
Three 16-Bit Timer/Counters
11 Programmable I/O Lines
11 Interrupt Sources, Two Priority Levels
Power
Specified for 3 V and 5 V Operation
Normal: 3 mA @ 3 V (Core CLK = 2.1 MHz)
Power-Down: 15 ␮A at 3 V (32 kHz Running)
On-Chip Peripherals
Power-On Reset Circuit (No Need for External
POR Device)
Temperature Monitor (؎1.5؇C)
Precision Voltage Reference
Time Interval Counter (Wake-Up/RTC Timer)
UART Serial I/O
SPI^®/I²C^® Compatible Serial I/O
Watchdog Timer (WDT) and Power Supply
Monitor (PSM)
Package and Temperature Range
28-Lead TSSOP 4.4 mm ؋ 9.7 mm Body Package
Fully Specified for –40؇C to +125؇C Operation
APPLICATIONS
Optical Networking—Laser Power Control
Base Station Systems—Power Amplifier Bias Control
Precision Instruments and Smart Sensors
Battery-Powered Systems and General Precision
System Monitors
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
FUNCTIONAL BLOCK DIAGRAM
ADuC814
AIN0
AIN5
AIN T/H
MUX
12-BIT
ADC
ADC
CONTROL
LOGIC
DAC
CONTROL
LOGIC
DAC0
DAC1
BUF
BUF
DAC0
DAC1
VREF
CREF
TEMP
MONITOR
INTERNAL
BAND GAP
VREF
BUF
POWER-
ON
RESET
PROG.
CLOCK
DIVIDER
OSC
AND
PLL
8051-BASED MCU WITH ADDITIONAL
PERIPHERALS
8 KBYTES FLASH/EE PROGRAM MEMORY
640 BYTES FLASH/EE DATA MEMORY
256 BYTES USER RAM
3 ؋ 16-BIT
TIMER/COUNTERS
1 ؋ WAKE-UP/RTC
TIMER
ON-CHIP MONITORS
POWER SUPPLY
MONITOR
WATCHDOG TIMER
10 ؋ DIGITAL I/O PINS
UART AND SPI
SERIAL I/O
XTAL1 XTAL2
GENERAL DESCRIPTION
The ADuC814 is a fully integrated 247 kSPS 12-bit data acquisi-
tion system incorporating a high performance multichannel ADC, an
8-bit MCU, and program/data Flash/EE memory on a single chip.
This low power device operates from a 32 kHz crystal with an
on-chip PLL generating a high frequency clock of 16.78 MHz.
This clock is in turn routed through a programmable clock divider
from which the MCU core clock operating frequency is generated.
The microcontroller core is an 8052 and is therefore 8051-
instruction-set compatible. 8 Kbytes of nonvolatile Flash/EE
program memory are provided on-chip. 640 bytes of nonvolatile
Flash/EE data memory and 256 bytes of RAM are also integrated
on-chip.
The ADuC814 also incorporates additional analog functionality
with dual 12-bit DACs, a power supply monitor, and a band
gap reference.
On-chip factory firmware supports in-circuit serial download and
debug modes (via UART), as well as the single-pin emulation
mode via the DLOAD pin. The ADuC814 is supported by a
QuickStart™ development system. This is a full featured low cost
system, consisting of PC-based (Windows^® compatible) hardware
and software development tools.
The part operates from a single 3 V or 5 V supply over the
extended temperature range –40ЊC to +125ЊC. When operating
from 3 V supplies, the power dissipation for the part is below
10 mW. The ADuC814 is housed in a 28-lead TSSOP package.
MicroConverter is a registered trademark of Analog Devices, Inc.
SPI is a registered trademark of Motorola Inc.
I²C is a registered trademark of Phillips Corporation.
QuickStart is a trademark of Analog Devices, Inc.
Windows is a registered trademark of Microsoft Corporation.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone]
www.analog.com
Fax: [phone]
© Analog Devices, Inc., 2002