ADUC7128_15 Datasheet, PDF (1/92 Pages) Analog Devices – Precision Analog Microcontroller ARM7TDMI MCU with 12-Bit ADC and DDS DAC

Precision Analog Microcontroller
ARM7TDMI MCU with 12-Bit ADC and DDS DAC
ADuC7128/ADuC7129
FEATURES
Analog I/O
Multichannel, 12-bit, 1 MSPS ADC
Up to 14 analog-to-digital converter (ADC) channels
Fully differential and single-ended modes
0 to VREF analog input range
10-bit digital-to-analog converter (DAC)
32-bit 21 MHz direct digital synthesis (DDS)
Current-to-voltage (I/V) conversion
Integrated second-order low-pass filter (LPF)
DDS input to DAC
100 Ω line driver
On-chip voltage reference
On-chip temperature sensor (±3°C)
Voltage comparator
Microcontroller
ARM7TDMI core, 16-/32-bit RISC architecture
JTAG port supports code download and debug
External watch crystal/clock source
41.78 MHz PLL with 8-way programmable divider
Optional trimmed on-chip oscillator
Memory
126 kB Flash/EE memory, 8 kB SRAM
In-circuit download, JTAG-based debug
Software triggered in-circuit reprogrammability
On-chip peripherals
2× UART, 2× I²C and SPI serial I/O
Up to 40-pin GPIO port
5× general-purpose timers
Wake-up and watchdog timers (WDT)
Power supply monitor
16-bit PWM generator
Quadrature encoder
Programmable logic array (PLA)
Power
Specified for 3 V operation
Active mode
11 mA (@ 5.22 MHz)
45 mA (@ 41.78 MHz)
Packages and temperature range
64-lead 9 mm × 9 mm LFCSP package, −40°C to 125°C
64-lead LQFP, −40°C to +125°C
80-lead LQFP, −40°C to +125°C
Tools
Low cost QuickStart development system
Full third-party support
FUNCTIONAL BLOCK DIAGRAM
ADC0
CMP0
CMP1
CMP_OUT
V_REF
RST
XCLKI
XCLKO
XCLK
MUX ^T/H
12-BIT SAR
ADC 1MSPS
TEMP
SENSOR
+
–
BAND GAP
REFERENCE
DDS
10-BIT
IOUT DAC
I/IV/V
LPF
ADuC7129
POR
OSC/PLL
PSM
ARM7TDMI-BASED MCU
WITH ADDITIONAL PERIPHERALS
5 GEN PURPOSE
TIMERS
2 kBYTES
62 kBYTES 64 kBYTES 8192 BYTES
WAKE-UP/
FLASH/EE FLASH/EE
SRAM
RTC TIMER
(31k ×
(32k ×
(2k ×
INTERRUPT
16 BITS) 16 BITS) 32 BITS)
CONTROLLER
GPIO
JTAG PLA SPI I2C UART0 UART1 _CONTROL
PWM
QUAD
ENCODER
JTAG
P0.0 P0.7 P1.0 P1.7 P2.0 P2.7 P3.0 P3.3
Figure 1.
VDAC_OUT
LD1TX
LD2TX
PWM1
PWM2
PWM3
PWM4
PWM5
PWM6
S1
S2
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. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: [phone]
www.analog.com
Fax: [phone]
©2007 Analog Devices, Inc. All rights reserved.