z85c30 ZiLOG Semiconductor, z85c30 Datasheet - Page 5

• Manufacturer Part Number: z85c30
• Description: Cmos Scc Serial Communications Controller
• Manufacturer: ZiLOG Semiconductor

Overview
PS011705-0608
The features of Zilog’s Z80C30 and Z85C30 devices include:
•
•
•
•
•
•
•
•
•
•
•
•
•
Z85C30 — Optimized for Non-Multiplexed Bus Microprocessors.
Z80C30 — Optimized for Multiplexed Bus Microprocessors.
Pin Compatible to NMOS Versions.
Two Independent, 0 to 4.1 Mbit/Second, Full-Duplex Channels. Each channel with
Separate Crystal Oscillator, Baud Rate Generator (BRG), and Digital Phase-Locked
Loop (DPLL) for Clock Recovery.
Multi-Protocol Operation under Program Control; Programmable for NRZ, NRZI, or
FM Data Encoding.
Asynchronous Mode with Five to Eight Bits and One, One and One-Half, or Two
Stop Bits Per Character, Programmable Clock Factor, Break Detection and
Generation; Parity, Overrun, and Framing Error Detection.
Synchronous Mode with Internal or External Character Synchronization on One or
Two Synchronous Characters and CRC Generation and Checking with CRC-16 or
CRC-CCITT Preset to either 1s or 0s.
SDLC/HDLC Mode with Comprehensive Frame-Level Control, Automatic Zero
Insertion and Deletion, I-Field Residue Handling, Abort Generation and Detection,
CRC Generation and Checking, and SDLC Loop.
Software Interrupt Acknowledge Feature (not available with NMOS).
Local Loopback and Auto Echo Modes.
Supports T1 Digital Trunk.
Enhanced DMA Support (not available with NMOS) 10 x 19-Bit Status FIFO 14-Bit
Byte Counter.
Speeds:
–
–
Z85C3O — 8.5, 10, 16.384 MHz
Z80C3O — 8, 10 MHz
CMOS SCC Serial Communications Controller
Product Specification
Overview
1