Z8S180 Zilog., Z8S180 Datasheet - Page 17

• Manufacturer Part Number: Z8S180
• Description: ENHANCED Z180 MICROPROCESSOR
• Manufacturer: Zilog.

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UM005001-ZMP0400
Z 8018x Fam il y
M PU Us e r M anual
on-chip memory management unit (MMU) with the capability of
addressing up to 1 MB of memory.
Reduced system costs are obtained by incorporating several key system
functions on-chip with the CPU. These key functions include I/O devices
such as DMA, UART, and timer channels. Also included on-chip are
several glue functions such as dynamic RAM refresh control, wait state
generators, clock oscillator, and interrupt controller.
Not only does the Z8X180 consume a low amount of power during
normal operation, but processors with Z8S180 and Z8L180 class
processors also provides two operating modes that are designed to
drastically reduce the power consumption even further. The SLEEP mode
reduces power by placing the CPU into a stopped state, thereby
consuming less current, while the on-chip I/O device is still operating.
The SYSTEM STOP mode places both the CPU and the on-chip
peripherals into a stopped state, thereby reducing power consumption
even further.
When combined with other CMOS VLSI devices and memories, the
Z8X180 provides an excellent solution to system applications requiring
high performance, and low power operation.
Figures 1 through 3 illustrate the three pin packages in the Z8X180 MPU
family:
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•
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Pin out package descriptions for other Z8X180-based products are
covered in their respective product specifications.
Figure 4 depicts the block diagram that is shared throughout all
configurations of the Z8X180.
64-Pin Dual In-line Package (DIP), Figure 1
68-Pin Plastic Leaded Chip Carrier (PLCC), Figure 2
80-Pin Quad Flat Pack (QFP), Figure 3