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参数资料
型号： P83C251TQ24
厂商： INTEL CORP
元件分类： 微控制器/微处理器
英文描述： 8-BIT, MROM, 24 MHz, MICROCONTROLLER, PDIP40
封装： PLASTIC, DIP-40
文件页数： 33/36页
文件大小： 813K
代理商： P83C251TQ24
2
FIGURES
Figure 1.
8xC251TB/TQ Block Diagram 1
Figure 2.
The 8xC251TB/TQ Family Nomenclature 2
Figure 3.
8xC251TB/TQ 44-pin PLCC Package 4
Figure 4.
8xC251TB/TQ 40-pin PDIP Packages 5
Figure 5.
External Bus Cycle: Code Fetch (Nonpage Mode) 18
Figure 6.
External Bus Cycle: Data Read (Nonpage Mode) 19
Figure 7.
External Bus Cycle: Data Write (Nonpage Mode) 20
Figure 8.
External Bus Cycle: Code Fetch (Page Mode) 21
Figure 9.
External Bus Cycle: Data Read (Page Mode) 22
Figure 10.
External Bus Cycle: Data Write (Page Mode) 23
Figure 11.
External Bus Cycle: Code Fetch/Data Read (Nonpage Mode) 24
Figure 12.
External Bus Cycle: Data Write (Nonpage Mode) 25
Figure 13.
External Bus Cycle: Code Fetch/Data Read (Page Mode) 26
Figure 14.
External Bus Cycle: Data Write (Page Mode) 27
Figure 15.
Serial Port Waveform — Shift Register Mode 28
Figure 16.
External Clock Drive Waveforms 29
Figure 17.
AC Testing Input, Output Waveforms 29
Figure 18.
Float Waveforms 30
TABLES
Table 1.
Description of Product Nomenclature 2
Table 2.
Proliferation Options 3
Table 3.
Package Information 3
Table 4.
8xC251TB/TQ Pin Assignment 6
Table 5.
8xC251TB/TQ PLCC/DIP Pin Assignments Arranged by Functional Category 7
Table 6.
Signal Descriptions 8
Table 7.
Memory Signal Selections (RD1:0) 10
Table 8.
8xC251TB/TQ Address Map 11
Table 9.
DC Characteristics at VCC = 4.5 – 5.5 V 12
Table 10.
AC Timing Symbol Definitions 14
Table 11.
AC Characteristics 14
Table 12.
Real-time Wait Timing Symbol Definitions 24
Table 13.
Real-Time Wait AC Timing 27
Table 14.
Serial Port Timing — Shift Register Mode 28
Table 15.
External Clock Drive 29
Table 16.
Thermal Characteristics 30
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