參數(shù)資料
型號: MC68HC16Y1
廠商: Motorola, Inc.
英文描述: 16-Bit Modular Microcontroller(16位模塊化微控制器)
中文描述: 16位微控制器模塊(16位模塊化微控制器)
文件頁數(shù): 59/122頁
文件大?。?/td> 749K
代理商: MC68HC16Y1
MC68HC16Y1
MC68HC16Y1TS/D
MOTOROLA
59
*MODCLK signal is only recognized during reset
When the corresponding pin is configured for edge detection, a PORTFE bit is set if an edge is detected.
PORTFE bits remain set, regardless of the subsequent state of the corresponding pin, until cleared. To
clear a bit, first read PORTFE, then write the bit to zero. When a pin is configured for general-purpose
I/O or for use as an interrupt request input, PORTFE bits do not change state.
This register determines which vector in the exception vector table is used for interrupts generated by
the port F edge-detect logic. Program PFIVR[7:0] to the value pointing to the appropriate interrupt vec-
tor. See the CPU16 section of this summary for interrupt vector assignments.
PFLVR determines the priority level of the port F edge-detect interrupt. The reset value is $00, indicating
that the interrupt is disabled. When several sources of interrupts from the SCIM are arbitrating for the
same level, the port F edge-detect interrupt has the lowest arbitration priority.
Table 20 Port F Pin Assignments
PFPAR Field
PFPA3
PFPA2
PFPA1
PFPA0
Port F Signal
PF[7:6]
PF[5:4]
PF[3:2]
PF[1:0]
Alternate Signal
IRQ[7:6]
IRQ[5:4]
IRQ[3:2]
IRQ1, MODCLK*
Table 21 PFPAR Pin Functions
PFPAx Bits
00
01
10
11
Port F Signal
I/O pin without edge detect
Rising edge detect
Falling edge detect
Interrupt request
PORTFE
—Port F Edge-Detect Flag Register
$YFFA2B
7
6
5
4
3
2
1
0
EF7
RESET:
0
EF6
EF5
EF4
EF3
EF2
EF1
EF0
0
0
0
0
0
0
0
PFIVR
— Port F Edge-Detect Interrupt Vector Register
$YFFA2B
7
6
5
4
3
2
1
0
PFIVR7
RESET:
0
PFIVR6
PFIVR5
PFIVR4
PFIVR3
PFIVR2
PFIVR1
PFIVR0
0
0
0
1
1
1
1
PFLVR
— Port F Edge-Detect Interrupt Level Register
$YFFA2D
7
0
6
0
5
0
4
0
3
0
2
1
0
PFLV2
PFLV1
PFLV0
RESET:
0
0
0
0
0
0
0
0
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MC68HC16Z1CAG16 制造商:Freescale Semiconductor 功能描述:IC16-BIT MICROCONTROLLER
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