mc68hc908lj24 Freescale Semiconductor, Inc, mc68hc908lj24 Datasheet - Page 289

• Manufacturer Part Number: mc68hc908lj24
• Description: M68hc08 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

14.4 Pin Name Conventions and I/O Register Addresses
MC68HC908LJ24/LK24 — Rev. 2.1
Freescale Semiconductor
Addr.
$0010
$0011
$0012
SPI Status and Control
Register Name
SPI Control Register
SPI Data Register
NOTE:
(SPSCR)
Register
(SPCR)
(SPDR)
The text that follows describes the SPI. The SPI I/O pin names are SS
(slave select), SPSCK (SPI serial clock), CGND (clock ground), MOSI
(master out slave in), and MISO (master in/slave out). The SPI shares
four I/O pins with four parallel I/O ports.
The full names of the SPI I/O pins are shown in
pin names appear in the text that follows.
The SS and SPSCK pins are also shared with CALIN and CALOUT
respectively. To avoid erratic behavior, these two pins should never be
configured for use as SPI and RTC calibration simultaneously.
Figure 14-1
=
Pin Names: SPI PTD1/MISO PTD2/MOSI
Reset:
Reset:
Reset:
Read:
Read:
Read:
Write:
Write:
Write:
Full SPI
SPI Generic
Figure 14-1. SPI I/O Register Summary
Pin Names:
Serial Peripheral Interface Module (SPI)
SPRIE
SPRF
Bit 7
R7
T7
0
0
summarizes the SPI I/O registers.
= Unimplemented
ERRIE
Table 14-1. Pin Name Conventions
R6
T6
R
6
0
0
MISO
SPMSTR
OVRF
R5
T5
5
1
0
Pin Name Conventions and I/O Register Addresses
Unaffected by reset
MOSI
MODF
CPOL
R4
T4
4
0
0
Serial Peripheral Interface Module (SPI)
CPHA
SPTE
PTD0/SS
R3
T3
R
3
1
1
CALIN
SS
Table
= Reserved
SPWOM
MODFEN
R2
T2
2
0
0
PTD3/SPSCK/
14-1. The generic
CALOUT
SPSCK
SPR1
SPE
R1
T1
1
0
0
Data Sheet
CGND
SPTIE
SPR0
Bit 0
V
R0
T0
0
0
SS
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