Rainbow-electronics AT89LP214 Manual de usuario descargar pdf (Pagina 77)

3538A–MICRO–7/06

AT89LP213/214 [Preliminary]

24.3 Serial Peripheral Interface Timing

Table 24-1. SPI Master Characteristics

Symbol Parameter Min Max Units

CLCL

Oscillator Period 41.6 ns

SCK

Serial Clock Cycle Time 4t

CLCL

SHSL

Clock High Time t

SCK

/2 - 25 ns

SLSH

Clock Low Time t

SCK

/2 - 25 ns

Rise Time 25 ns

Fall Time 25 ns

SIS

Serial Input Setup Time 10 ns

SIH

Serial Input Hold Time 10 ns

SOH

Serial Output Hold Time 10 ns

SOV

Serial Output Valid Time 35 ns

Table 24-2. SPI Slave Characteristics

Symbol Parameter Min Max Units

CLCL

Oscillator Period 41.6 ns

SCK

Serial Clock Cycle Time 4t

CLCL

SHSL

Clock High Time 1.5 t

CLCL

- 25 ns

SLSH

Clock Low Time 1.5 t

CLCL

- 25 ns

Rise Time 25 ns

Fall Time 25 ns

SIS

Serial Input Setup Time 10 ns

SIH

Serial Input Hold Time 10 ns

SOH

Serial Output Hold Time 10 ns

SOV

Serial Output Valid Time 35 ns

SOE

Output Enable Time 10 ns

SOX

Output Disable Time 25 ns

SSE

Slave Enable Lead Time 10 ns

SSD

Slave Disable Lag Time 0 ns

1 2 ... 72 73 74 75 76 77 78 79 80 81 82 ... 89 90

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Rainbow-electronics AT89LP214 Manual de usuario Pagina 77

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