Want to post a buying lead? If you are not a member yet, please select the specific/related part number first and then fill the quantity and your contact details in the "Request for Quotation Form" on the left, and then click "Send RFQ".Your buying lead can then be posted, and the reliable suppliers will quote via our online message system or other channels soon.
The PCA84C122 is a stand-alone microcontroller designed for use in remote control transmitters for a wide range of applications. The PCA84C122 provides a number of dedicated hardware functions for remote controller applications. These functions include the following additional blocks to the 84CXXX core: · Interrupt Gate · Hardware Modulator · Output Driver · Watchdog Timer.
PCA84C122 Features
` 84CXXX CPU ` ROM, RAM and I/O configurations are device dependent; see Chapter 3 ` Two test inputs: T0 (ANDed with Port 1 input lines) and T1 ` 3 single-level vectored interrupt sources: external (T0/INT and Port 1, for keypad press wake-up function) timer/counter (TI) hardware modulator interrupt ` 8-bit programmable timer/counter with 5-bit pre-scaler ` Power saving: Idle and Stop modes are provided ` Hardware Modulator providing pulse bursts, with: programmable duty factor for each pulse programmable number of pulses ` One output line from the Hardware Modulator to control the driver transistor for the infrared LED (IR-LED). Capable of sinking 27 mA at VDD = 2.0 V, VOUT = 1.0 V ` Watchdog Timer to keep the transmitter from being locked or malfunction ` Available packages: SO and DIP types (SO20, SO24, SO28, SDIP24 and DIP20); see Chapter 4 ` On-chip oscillator: 455 kHz to 6 MHz ` Single supply voltage: 2.0 V to 5.5 V ` Operating temperature: -20 to +50 .