Rainbow-electronics T89C51AC2 Manual do Utilizador descarregar pdf (Página 106)

106

T89C51AC2

Rev. B – 19-Dec-01

18.5.14 Flash Memory Table 69. Timing Symbol Definitions

Table 70. Memory AC Timing

VDD= 5 V +/- 10% , TA= -40 to +85°C

Figure 45. FLASH Memory - ISP Waveforms

Figure 46. FLASH Memory - Internal Busy Waveforms

Signals Conditions

S(Hardware

condition)

PSEN#,EA L Low

RRST VValid

B FBUSY flag X No Longer Valid

Symbol Parameter Min Typ Max Unit

SVRL

Input PSEN# Valid to RST Edge 50 ns

RLSX

Input PSEN# Hold after RST Edge 50 ns

BHBL

FLASH Internal Busy (Programming) Time 10 ms

RST

SVRL

PSEN#1

RLSX

FBUSY bit

BHBL

1 2 ... 101 102 103 104 105 106 107 108 109 110

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