ADuC7121 is a precision analog microcontroller with 12-bit analog I/O and ARM7TDMI MCU.
The ADuC7121 is a fully integrated 12‑bit microcontroller featuring a 9‑channel, 1 MSPS ADC, five current‑output DACs, four voltage‑output DACs, and an ARM7TDMI core with up to 41 MIPS performance. It operates from 3.0 V to 3.6 V and is specified for industrial temperatures from –10 °C to +95 °C.
The handbook provides detailed specifications, functional block diagrams, pin configurations, timing data, and information on the on‑chip peripherals such as UART, SPI, PWM, timers, and power‑supply monitoring. It also includes revision history, ordering guide, and package dimensions for the 108‑ball CSP‑BGA package.
| ADC resolution | 12 bits |
|---|---|
| ADC sampling rate | 1 MSPS |
| Flash memory | 126 kB |
| SRAM | 8 kB |
| Operating voltage | 3.0 V to 3.6 V |
| Temperature range | -10 °C to +95 °C |
| IDAC0 full‑scale output | 250 mA |
| IDAC1 full‑scale output | 200 mA |
| IDAC2 full‑scale output | 45 mA |
| IDAC3 full‑scale output | 80 mA |
| IDAC4 full‑scale output | 20 mA |
| PLL frequency | 41.78 MHz |
The ADC provides a 12‑bit resolution.
It operates from 3.0 V to 3.6 V.
The ADC can sample at up to 1 MSPS.