Contents
8xC251TA/TB/TP/TQ
HIGH-PERFORMANCE CHMOS Microcontroller
Commercial/Express
1.0 INTRODUCTION ......................................................................................................................................... 1
2.0 NOMENCLATURE ...................................................................................................................................... 2
3.0 PINOUT ....................................................................................................................................................... 4
4.0 SIGNALS ..................................................................................................................................................... 8
5.0 ADDRESS MAP ........................................................................................................................................ 11
6.0 ELECTRICAL CHARACTERISTICS ......................................................................................................... 12
6.1 D.C. Characteristics ........................................................................................................................... 12
6.2 Definition of AC Symbols ................................................................................................................... 14
6.3 A.C. Characteristics ........................................................................................................................... 14
6.3.1 External Bus Cycles, Nonpage Mode ..................................................................................... 18
6.3.2 External Bus Cycles, Page Mode ........................................................................................... 21
6.3.3 Definition of Real-Time Wait Symbols .................................................................................... 24
6.3.4 External Bus Cycles, Real-Time Wait States .......................................................................... 24
6.4 AC Characteristics — Serial Port, Shift Register Mode ..................................................................... 28
6.5 External Clock Drive .......................................................................................................................... 29
7.0 THERMAL CHARACTERISTICS .............................................................................................................. 30
ADVANCE INFORMATION
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