Precision Analog Microcontroller, 12-Bit
Analog I/O, ARM7TDMI MCU
Data Sheet
ADuC7019/20/21/22/24/25/26/27/28/29
On-chip peripherals
FEATURES
UART, 2× I2C® and SPI serial I/O
Up to 40-pin GPIO port1
4× general-purpose timers
Wake-up and watchdog timers (WDT)
Power supply monitor
3-phase, 16-bit PWM generator1
Programmable logic array (PLA)
External memory interface, up to 512 kB1
Power
Analog I/O
Multichannel, 12-bit, 1 MSPS ADC
Up to 16 ADC channels1
Fully differential and single-ended modes
0 V to VREF analog input range
12-bit voltage output DACs
Up to 4 DAC outputs available1
On-chip voltage reference
On-chip temperature sensor ( 3°C)
Voltage comparator
Specified for 3 V operation
Active mode: 11 mA @ 5 MHz, 40 mA @ 41.78 MHz
Packages and temperature range
From 40-lead 6 mm × 6 mm LFCSP to 80-lead LQFP1
Fully specified for –40°C to +125°C operation
Tools
Microcontroller
ARM7TDMI core, 16-bit/32-bit RISC architecture
JTAG port supports code download and debug
Clocking options
Trimmed on-chip oscillator ( 3%)
External watch crystal
External clock source up to 44 MHz
41.78 MHz PLL with programmable divider
Memory
62 kB Flash/EE memory, 8 kB SRAM
In-circuit download, JTAG-based debug
Low cost QuickStart™ development system
Full third-party support
APPLICATIONS
Industrial control and automation systems
Smart sensors, precision instrumentation
Base station systems, optical networking
Software-triggered in-circuit reprogrammability
FUNCTIONAL BLOCK DIAGRAM
12-BIT
DAC
DAC0
DAC1
DAC2
1MSPS
ADC0 TO ADC4,
ADC12 TO ADC14
MUX
12-BIT ADC
12-BIT
DAC
ADuC7019
ADC15
TEMP
SENSOR
12-BIT
DAC
CMP0
CMP1
BAND GAP
REF
CMP
OUT
V
REF
3-PHASE
OSC
PWM
XCLKI
ARM7TDMI-BASED MCU WITH
ADDITIONAL PERIPHERALS
AND PLL
XCLKO
(SEE NOTE 1)
2k × 32 SRAM
31k × 16 FLASH/EEPROM
PLA
GPIO
JTAG
PSM
4 GENERAL-
PURPOSE TIMERS
SERIAL I/O
RST
POR
2
UART, SPI, I C
NOTES
1. SEE APPLICATION NOTE AN-798.
Figure 1.
1 Depending on part model. See Ordering Guide for more information.
Rev. F
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