Lenovo ThinkPad 560E TP 560Z Technical Reference Manual - Page 13

Specifications, Performance Specifications, to

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Specifications Figure 1-4 to Figure 1-7 on page 1-9 list the specifications for the computer. Performance Specifications Device Microprocessor (66 MHz-15 ns clock) Access to RAM: Memory read Page hit, burst Page miss, burst Memory write Page miss, burst Access to ROM: Refresh rate (typically performed every 15.6 µs) DMA controller (4 MHz-250 µs clock): Bus cycles (AT): 8 bit 16 bit Cycle Time (ns) 135 ns 255 ns 45 ns 1000 750 (minimum) 1250 1000 625 The cycle times shown for access to system-board RAM are based on 60-ns EDO memory. Figure 1-4. Performance Specifications for the ThinkPad 560Z ThinkPad 560Z System Overview 1-7

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Specifications
Figure
1-4 to Figure
1-7 on page
1-9 list the specifications for the
computer.
Performance Specifications
Figure
1-4.
Performance Specifications for the ThinkPad 560Z
Device
Cycle
Time (ns)
Microprocessor (66 MHz–15 ns clock)
Access to RAM:
±
Memory read
Page hit, burst
Page miss, burst
135 ns
255 ns
Memory write
Page miss, burst
45 ns
Access to ROM
:
1000
Refresh rate
(typically performed every 15.6
μ
s)
750 (minimum)
DMA controller (4 MHz–250
μ
s clock)
:
1250
Bus cycles (AT)
:
8 bit
16 bit
1000
625
±
The cycle times shown for access to system-board RAM are based on 60-ns
EDO memory.
ThinkPad 560Z System Overview
1-7