Description

The PCD3755AT is a member of the PCD33xxA family of microcontrollers in the IC chips product category. This device is an 8-bit CPU, ROM, RAM, EEPROM, and I/O module in a single 28-lead or 32-lead package. The device comes with 8 kbytes of user-programmable ROM, 128 bytes of RAM, and 128 bytes Electrically Erasable Programmable Read-Only Memory (EEPROM). It features over 100 instructions (based on MAB8048) all of 1 or 2 cycles. Additionally, it comes with 20 quasi-bidirectional I/O port lines, a programmable Timer/event counter 1, a reloadable Timer 2, and three single-level vectored interrupts. The device is manufactured in silicon gate CMOS process, with an operating temperature ranging from -25 to +70 °C.

Specifications and features

• 8-bit CPU, ROM, RAM, EEPROM, and I/O module
• 8 kbytes user-programmable ROM (One-Time Programmable)
• 128 bytes RAM
• 128 bytes Electrically Erasable Programmable Read-Only Memory (EEPROM)
• Over 100 instructions (based on MAB8048) all of 1 or 2 cycles
• 20 quasi-bidirectional I/O port lines
• 8-bit programmable Timer/event counter 1
• 8-bit reloadable Timer 2
• Three single-level vectored interrupts: external, 8-bit programmable Timer/event counter 1, and derivative triggered by reloadable Timer 2
• Two test inputs
• DTMF, modem, musical tone generator
• Reference for supply and temperature-independent tone output
• Filtering for low output distortion (CEPT compatible)
• Melody output for ringer application
• Power-on-reset
• Stop and Idle modes
• Supply voltage: 1.8 to 6 V (DTMF tone output and EEPROM erase/write from 2.5 V)
• Clock frequency: 1 to 16 MHz (3.58 MHz for DTMF suggested)
• Operating temperature ranging from -25 to +70 °C
• Manufactured in silicon gate CMOS process

Application Scenarios

The PCD3755AT can be used in various applications such as DTMF generators, musical tone generators, and modem applications. It is also suitable for low output distortion filtering systems and melody output applications.

Comparison

• Comes in a single 28-lead or 32-lead package
• Features 8 kbytes user-programmable ROM
• Supports various programmable timers and interrupts
• Manufactured in silicon gate CMOS process
• Suitable for a wide range of applications, including DTMF generators, musical tone generators, and modem applications

• May have limited power-on voltage and clock frequency
• Requires external components for some applications