80C251TA データシートの表示（PDF） - Intel

部品番号

コンポーネント説明

メーカー

80C251TA

HIGH-PERFORMANCE CHMOS MICROCONTROLLER

Intel 

Contents

FIGURES

Figure 1.

Figure 2.

Figure 3.

Figure 4.

Figure 5.

Figure 6.

Figure 7.

Figure 8.

Figure 9.

Figure 10.

Figure 11.

Figure 12.

Figure 13.

Figure 14.

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Figure 16.

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Figure 18.

TABLES

Table 1.

Table 2.

Table 3.

Table 4.

Table 5.

Table 6.

Table 7.

Table 8.

Table 9.

Table 10.

Table 11.

Table 12.

Table 13.

Table 14.

Table 15.

Table 16.

8xC251TA/TB/TP/TQ Block Diagram ........................................................................................ 1

The 8xC251TA/TB/TP/TQ Family Nomenclature....................................................................... 2

8xC251TA/TB/TP/TQ 44-pin PLCC Package ............................................................................ 4

8xC251TA/TB/TP/TQ 40-pin PDIP Packages............................................................................ 5

External Bus Cycle: Code Fetch (Nonpage Mode) .................................................................. 18

External Bus Cycle: Data Read (Nonpage Mode) ................................................................... 19

External Bus Cycle: Data Write (Nonpage Mode).................................................................... 20

External Bus Cycle: Code Fetch (Page Mode) ........................................................................ 21

External Bus Cycle: Data Read (Page Mode).......................................................................... 22

External Bus Cycle: Data Write (Page Mode).......................................................................... 23

External Bus Cycle: Code Fetch/Data Read (Nonpage Mode)................................................ 24

External Bus Cycle: Data Write (Nonpage Mode).................................................................... 25

External Bus Cycle: Code Fetch/Data Read (Page Mode) ...................................................... 26

External Bus Cycle: Data Write (Page Mode).......................................................................... 27

Serial Port Waveform — Shift Register Mode.......................................................................... 28

External Clock Drive Waveforms ............................................................................................. 29

AC Testing Input, Output Waveforms ...................................................................................... 29

Float Waveforms...................................................................................................................... 30

Description of Product Nomenclature ........................................................................................ 2

Proliferation Options .................................................................................................................. 3

Package Information .................................................................................................................. 3

8xC251TA/TB/TP/TQ Pin Assignment ....................................................................................... 6

8xC251TA/TB/TP/TQ PLCC/DIP Pin Assignments Arranged by Functional Category .............. 7

Signal Descriptions .................................................................................................................... 8

Memory Signal Selections (RD1:0) .......................................................................................... 10

8xC251TA/TB/TP/TQ Address Map ......................................................................................... 11

DC Characteristics at VCC = 4.5 – 5.5 V .................................................................................. 12

AC Timing Symbol Definitions ................................................................................................. 14

AC Characteristics ................................................................................................................... 14

Real-time Wait Timing Symbol Definitions ............................................................................... 24

Real-Time Wait AC Timing ...................................................................................................... 27

Serial Port Timing — Shift Register Mode ............................................................................... 28

External Clock Drive ................................................................................................................ 29

Thermal Characteristics ........................................................................................................... 30

iv

ADVANCE INFORMATION

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