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The PCD3315 is an 8‑bit CMOS microcontroller designed for telephone set applications. It integrates CPU, ROM, RAM and I/O in a single 28‑lead package.
The handbook lists its main features, pin assignments, package options and electrical characteristics such as supply voltage, clock range, temperature limits and DC parameters.
| CPU architecture | 8‑bit |
|---|---|
| ROM size | 1536 bytes |
| RAM size | 160 bytes |
| I/O port lines | 20 quasi‑bidirectional I/O lines |
| Programmable timer/event counter | 8‑bit |
| Instruction count | over 80 instructions |
| Clock frequency | 100 kHz to 10 MHz |
| Supply voltage | 1 V to 6 V (single supply) |
| Operating temperature range | -25 °C to +70 °C |
| Package types | 28‑lead DIL (PCD3315P) or 28‑lead mini‑pack (PCD3315T) |
It operates from 1 V up to 6 V with a single supply.
The device is specified for –25 °C to +70 °C.
It provides 20 quasi‑bidirectional I/O port lines, plus additional port pins as shown in the pinning diagram.