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ADuC7124BCPZ126 Arkusz danych(PDF) 5 Page - Analog Devices |
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ADuC7124BCPZ126 Arkusz danych(HTML) 5 Page - Analog Devices |
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5 / 110 page  Data Sheet ADuC7124/ADuC7126 GENERAL DESCRIPTION The ADuC7124/ADuC7126 are fully integrated, 1 MSPS, 12-bit data acquisition system incorporating high performance multichannel ADCs, 16-bit/32-bit MCUs, and Flash/EE memory on a single chip. The ADC consists of up to 12 single-ended inputs. An additional four inputs are available but are multiplexed with the four DAC output pins. The ADC can operate in single-ended or differen- tial input mode. The ADC input voltage range is 0 V to VREF. A low drift band gap reference, temperature sensor, and voltage comparator complete the ADC peripheral set. The DAC output range is programmable to one of three voltage ranges. The DAC outputs have an enhanced feature of being able to retain their output voltage during a watchdog or soft- ware reset sequence. The devices operate from an on-chip oscillator and a PLL generating an internal high frequency clock of 41.78 MHz. This clock is routed through a programmable clock divider from which the MCU core clock operating frequency is generated. The microcontroller core is an ARM7TDMI®, 16-bit/32-bit RISC machine, which offers up to 41 MIPS of peak performance. Thirty-two kilobytes of SRAM and 126 kB of nonvolatile Flash/EE memory are provided on-chip. The ARM7TDMI core views all memory and registers as a single linear array. The ADuC7124/ADuC7126 contain an advanced interrupt controller. The vectored interrupt controller (VIC) allows every interrupt to be assigned a priority level. It also supports nested interrupts to a maximum level of eight per IRQ and FIQ. When IRQ and FIQ interrupt sources are combined, a total of 16 nested interrupt levels are supported. On-chip factory firmware supports in-circuit download via the UART serial interface port or the I2C port, while nonintrusive emulation is also supported via the JTAG interface. These fea- tures are incorporated into a low cost QuickStart™ development system supporting this MicroConverter® family. The parts contain a 16-bit PWM with six output signals. For communication purposes, the parts contain 2× I2C channels that can be individually configured for master or slave mode. An SPI interface supporting both master and slave modes is also provided. Thirdly, 2× UART channels are provided. Each UART contains a configurable 16-byte FIFO with receive and transmit buffers. The parts operate from 2.7 V to 3.6 V and is specified over an industrial temperature range of −40°C to +125°C. When operat- ing at 41.78 MHz, the power dissipation is typically 120 mW. The ADuC7124 is available in a 64-lead LFCSP package. The ADuC7126 is available in a 80-lead LQFP package. Rev. D | Page 5 of 110 |
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