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Product Detailed Parameters
- Description：IC MPU ZIP 20MHZ 100VQFP
- Series：ZIP™
- Mfr：Zilog
- Package：Tray
- Core Processor：Z8S180
- Number of Cores/Bus Width：1 Core, 8-Bit
- Speed：20MHz
- Co-Processors/DSP：-
- RAM Controllers：DRAM
- Graphics Acceleration：No
- Display & Interface Controllers：-
- Ethernet：-
- SATA：-
- USB：-
- Voltage - I/O：3.3V
- Operating Temperature：0°C ~ 70°C (TA)
- Security Features：-
- Mounting Type：Surface Mount
- Package / Case：100-LQFP
- Supplier Device Package：100-VQFP (14x14)
- Additional Interfaces：ASCI, CSIO, SCC, UART
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Overview
The Z8L18220ASC is a smart peripheral controller IC based on the Z8S180 MPU core, operating at 20 MHz with 3.3V supply. It integrates two ESCC channels with 32-bit CRC, three 8-bit parallel I/O ports, and a 16550 compatible mimic interface for direct PC/XT/AT bus connection. The device features two DMA channels, on-chip wait state generators, two UART channels, two 16-bit timer counters, an interrupt controller, and a clock oscillator. It utilizes a 100-pin QFP or VQFP package.
Feature Summary
- Integrates Z8S180 MPU core with two ESCC channels and 16550 mimic interface
- Supports direct connection to IBM PC, XT, and AT buses via 16550 mimic
- Includes two DMA channels and on-chip wait state generators
- Features two UART channels and two 16-bit timer counters
Applications
- Modem applications including V.Fast standards
- Fax machine implementations
- Voice messaging systems
- Communications applications requiring PC bus compatibility
Procurement Notes
Verify the specific suffix 'ASC' against official Zilog documentation to confirm voltage, temperature range, and package variations. Ensure the source datasheet explicitly lists this exact part number variant. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process before procurement.
Selection Notes
Select this component when a static microprocessor with integrated serial communication controllers and PC bus emulation is required. It is suitable for designs needing direct interfacing with legacy PC architectures without external bridge chips. Consider the 100-pin package constraints and 3.3V power supply requirements during PCB layout.
Part Context
This device belongs to the Z80182/Z8L182 family of intelligent peripheral controllers. It combines the Z8S180 processor with Z85230 ESCC peripherals and a 16550 mimic interface. The family is designed for high-performance communications control in embedded systems requiring robust serial data handling and bus compatibility.
Replacement Considerations
Z8L18220FSG
FAQ
What is the function of the 16550 mimic interface?
It allows direct connection to IBM PC, XT, and AT buses, maintaining software compatibility with current PC modem drivers by mimicking the standard 16550 UART chip.
How many DMA channels are available on the Z8L18220ASC?
The device includes two DMA channels for efficient data transfer between memory and peripherals.
