mc68hc708mp16 Freescale Semiconductor, Inc, mc68hc708mp16 Datasheet - Page 282

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mc68hc708mp16

Manufacturer Part Number
mc68hc708mp16
Description
M68hc08 Microcontrollers
Manufacturer
Freescale Semiconductor, Inc
Datasheet

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Serial Peripheral Interface Module (SPI)
13.14.3 SPI Data Register
Technical Data
282
NOTE:
Address: $001D
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
R7:R0/T7:T0 — Receive/Transmit Data Bits
Do not use read-modify-write instructions on the SPI data register since
the register read is not the same as the register written.
Reset:
Read:
Write:
Figure
Serial Peripheral Interface Module (SPI)
Bit 7
R7
T7
13-1.)
Figure 13-15. SPI Data Register (SPDR)
R6
T6
6
R5
T5
5
Indeterminate after reset
R4
T4
4
R3
T3
3
MC68HC708MP16
R2
Freescale Semiconductor
T2
2
R1
T1
1
Rev. 3.1
Bit 0
R0
T0

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