Rainbow-electronics AT89LP214 Manual de usuario descargar pdf (Pagina 53)

3538A–MICRO–7/06

AT89LP213/214 [Preliminary]

Figure 18-2. SPI Shift Register Diagram

Figure 18-3. SPI Block Diagram

2:1

MUX

2:1

MUX

Serial Master Serial Slave

LATCH

CLK

LATCH

CLK

LATCH

CLK

LATCH

CLK

Parallel Slave

(Read Buffer)

Parallel Master

(Write Buffer)

Serial Out

Receive

Byte

Serial In

Transmit

Byte

8 8

Oscillator

8-bit Shift Register

Read Data Buffer

Pin Control Logic

SPI Control

SPI Status Register

SPI Interrupt

Request

Internal

Data Bus

Select

SPI Clock (Mater)

Divider

÷4÷8÷32÷64

SPI Control Register

SPIF

WCOL

SPR1

MSTR

SPIE

Clock

Logic

Clock

MSB

SPE

DORD

MSTR

CPOL

CPHA

SPR1

SPR0

MSTR

SPE

DORD

LSB

MISO

P1.6

MOSI

P1.5

SCK

1.7

P1.4

SPR0

SPE

Write Data Buffer

1 2 ... 48 49 50 51 52 53 54 55 56 57 58 ... 89 90

Features 1
1. Description 1
AT89LP213/214 [Preliminary] 10
3538A–MICRO–7/06 50
Pin Control Logic 53
1 2 3 4 5 6 7 8 54
Comparator Out 55
Timer 1 Overflow 55
Regional Headquarters 90

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Rainbow-electronics AT89LP214 Manual de usuario Pagina 53

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