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ADuC7121

Analog Devices
Part Number ADuC7121
Manufacturer Analog Devices
Description Precision Analog Microcontroller
Published Mar 10, 2011
Detailed Description Data Sheet Precision Analog Microcontroller, 12-Bit Analog I/O, ARM7TDMI MCU ADuC7121 FEATURES Software-triggered in-...
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ADuC7121
ADuC7121

Overview
Data Sheet Precision Analog Microcontroller, 12-Bit Analog I/O, ARM7TDMI MCU ADuC7121 FEATURES Software-triggered in-circuit reprogrammability Analog input/output 9-channel, 12-bit, 1 MSPS ADC 2 differential pairs with input PGA 7 general-purpose inputs (differential or single-ended) Fully differential and single-ended modes 0 V to VREF analog input range 5 low noise current digital-to-analog converters (IDACs) 250 mA, 200 mA, 45 mA, 80 mA, 20 mA 4 × 12-bit voltage output DACs On-chip voltage reference On-chip temperature sensor 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 41.
78 MHz On-chip peripherals UART, 2 × I2C and SPI serial I/O 32-pin GPIO port 4× general-purpose timers Wake-up and watchdog timers (WDT) Power supply monitor Vectored interrupt controller for FIQ and IRQ 8 priority levels for each interrupt type Interrupt on edge or level external pin inputs Power Specified for 3 V operation Active mode: 11 mA at 5 MHz, 40 mA at 41.
78 MHz Packages and temperature range 7 mm × 7 mm 108-ball CSP_BGA Fully specified for –10°C to +95°C operation Tools Low cost QuickStart development system Full third party support 41.
78 MHz PLL with programmable divider Memory 126 kB flash/EE memory, 8 kB SRAM APPLICATIONS Optical modules—tunable laser In-circuit download, JTAG-based debug FUNCTIONAL BLOCK DIAGRAM AVDD 3.
3V AGND DAC0 DAC1 DAC2 DAC3 IDAC0 IDAC1 IDAC2 IDAC3 IDAC4 DAC BUF DAC BUF DAC BUF DAC BUF IDAC IDAC IDAC IDAC IDAC PADC0N PADC0P PADC1N PADC1P ADC4 ADC5 ADC6 ADC7 ADC8 ADC9 ADC10/AINCM PGA PGA TEMPERATURE SENSOR ADuC7121 1MSPS 12-BIT SAR ADC OSC WAKE-UP TIMER WD TIMER VIC PLA PLL POR PWM 3× GP 8kB SRAM TIMERS (2k × 32-BIT) LDO 126kB FLASH (63k × 16-BIT) ARM7 TDMI UART JTAG GPIO CONTROL SPI I2C × 2 INTERNAL REFERENCE BUF VREF_1.
2 VREF_2.
5 P0.
0 TO P0.
7 P1.
0 TO P1.
7 Figure 1...


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