Z8L189

Zilog P R E L I M I N A R Y Z80189/Z8L189 GENERAL -PURPOSE E MBEDDED CONTROLLERS PRELIMINARY PRODUCT SPECIFICATION Z80189/Z8L189 GENERAL-PURPOSE EMBEDDED CONTROLLERS FEATURES Part Z80189 Z8L189 CPU S180* S180* UART 16550 16550 I/O 24 24 Speed (MHz) 33 20 s s s s Com Port Decode PC DMA Mailbox Registers Host I/O Mailbox Programmable Fixed /ROMCS and /RAMCS Boundaries 100-Pin QFP and VQFP Packages 3.3 and 5.0-Volt Operating Ranges 0°C to +70°C Temperature Range s Fully Static Z180™ MPU Core* – – – – – – – – – – On-Chip 1 MByte MMU Two Enhanced UART Channels (up to 512 Kbps)† Two Chain-Linked DMA Channels† x 2 Clock Multiplier Low-Power Consumption Modes Two 16-Bit Timer/Counters Clocked Serial I/O On-Chip Wait State Generator (WSG) On-Chip Interrupt Controller s s s On-Chip Clock Oscillator/Generator s 16550 Compatible MIMIC Interface – 16 mA MIMIC Output Drive Capability Notes: † Enhancements from the Discrete S180 device. GENERAL DESCRIPTION The Z80189/Z8L189 are cost-effective modem controllers that address a new generation of data pumps having the HDLC formatting feature. Data pumps of these types do not require an HDLC interface; therefore, the Z80189 does not need the ESCC ™. The addition of the PC DMA Mailbox Registers allow DMA data transfer between the PC memory and the modem speaker/microphone CODEC. The Z80189 is a smart peripheral controller chip for modem (in particular V.34 applications), fax, voice messaging, and other communications applications. T...