M68ICS08GR datasheet(328/408 Pages) FREESCALE

No. de pieza	M68ICS08GR

Descripción Electrónicos	M68HC08 Microcontrollers

PDF	408 Pages

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Fabricante Electrónico	FREESCALE [Freescale Semiconductor, Inc]

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Serial Peripheral Interface (SPI)

Technical Data

MC68HC908GR8 — Rev 4.0

328

Serial Peripheral Interface (SPI)

MOTOROLA

20.14.3 SPI Data Register

The SPI data register consists of the read-only receive data register and

the write-only transmit data register. Writing to the SPI data register

writes data into the transmit data register. Reading the SPI data register

reads data from the receive data register. The transmit data and receive

data registers are separate registers that can contain different values.

See Figure 20-2.

R7–R0/T7–T0 — Receive/Transmit Data Bits

NOTE:

Do not use read-modify-write instructions on the SPI data register since

the register read is not the same as the register written.

Address: $0012

Bit 7

654321

Bit 0

Read:

Write:

Reset:

Indeterminate after reset

Figure 20-15. SPI Data Register (SPDR)

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M68ICS08GR Datasheet(PDF) 328 Page - Freescale Semiconductor, Inc