參數(shù)資料
型號(hào): MC68CK338
廠商: Motorola, Inc.
元件分類: 32位微控制器
英文描述: Highly Integrated, Low-Power, 32-Bit Microcontroller
中文描述: 高度集成,低功耗,32位微控制器
文件頁數(shù): 62/133頁
文件大?。?/td> 798K
代理商: MC68CK338
MOTOROLA
62
MC68CK338
MC68CK338TS/D
Clearing a bit in the PQSPAR assigns the corresponding pin to general-purpose I/O; setting a bit as-
signs the pin to the QSPI. The PQSPAR does not affect operation of the SCI.
Table 37
displays PQS-
PAR pin assignments.
DDRQS determines whether pins are inputs or outputs. Clearing a bit makes the corresponding pin an
input; setting a bit makes the pin an output. DDRQS affects both QSPI function and I/O function.
Table
38
shows the effect of DDRQS on QSM pin functions.
NOTES:
1. PQS2 is a digital I/O pin unless the SPI is en-
abled (SPE in SPCR1 set), in which case it be-
comes SPI serial clock SCK.
2. PQS7 is a digital I/O pin unless the SCI trans-
mitter is enabled (TE in SCCR1 = 1), in which
case it becomes SCI serial output TXD.
PQSPAR —
PORT QS Pin Assignment Register
DDRQS —
PORT QS Data Direction Register
$YFFC16
$YFFC17
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
0
PQSPA6 PQSPA5 PQSPA4 PQSPA3
0
PQSPA1 PQSPA0 DDQS7 DDQS6 DDQS5 DDQS4 DDQS3 DDQS2 DDQS1 DDQS0
RESET:
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Table 37 PQSPAR Pin Assignments
PQSPAR Field
PQSPA0
PQSPAR Bit
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Pin Function
PQS0
MISO
PQS1
MOSI
PQS2
1
SCK
PQS3
PCS0/SS
PQS4
PCS1
PQS5
PCS2
PQS6
PCS3
PQS7
2
TXD
PQSPA1
PQSPA2
PQSPA3
PQSPA4
PQSPA5
PQSPA6
PQSPA7
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