参数资料
型号: N83C251SP16
厂商: INTEL CORP
元件分类: 微控制器/微处理器
英文描述: HIGH-PERFORMANCE CHMOS MICROCONTROLLER
中文描述: 8-BIT, MROM, 16 MHz, MICROCONTROLLER, PQCC44
封装: PLASTIC, LCC-44
文件页数: 25/35页
文件大小: 186K
代理商: N83C251SP16
PRELIMINARY
25
8XC251SA/SB/SP/SQ HIGH-PERFORMANCE CHMOS MICROCONTROLLER
5.3.2
EXTERNAL BUS CYCLES, PAGE MODE
Figure 10. External Bus Cycle: Code Fetch (Page Mode)
XTAL1
ALE
TLHLL
A15:8
D7:0
TRHDZ1
RD#/PSEN#
P2
P0/A16/A17
TRHDX
TLLRL
TAVLL
TRLDV
TRLAZ
TAVRL
TAVDV1
TAVDV2
TOSC
A4213-02
TLHAX
Instruction In
A7:0/A16/A17
D7:0
Instruction In
A7:0/A16/A17
Page Miss
Page Hit
TAVDV3
The value of this parameter depends on wait states. See the table of AC characteristics.
A page hit (i.e., a code fetch to the same 256-byte "page" as the previous code fetch) requires one
state (2
T
OSC
); a page miss requires two states (4
T
OSC
).
During a sequence of page hits, PSEN# remains low until the end of the last page-hit cycle.
TLLAX
相关PDF资料
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N83C251SQ16 HIGH-PERFORMANCE CHMOS MICROCONTROLLER
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