參數(shù)資料
型號(hào)： MC68332MFV20
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： 32-Bit Modular Microcontroller
中文描述： 32-BIT, 20 MHz, MICROCONTROLLER, PQFP144
封裝： QFP-144
文件頁數(shù)： 38/88頁
文件大小： 446K
代理商： MC68332MFV20
MOTOROLA
38
MC68332
MC68332TS/D
The bits in this register control the function of each port F pin. Any bit cleared to zero defines the corre-
sponding pin to be an I/O pin. Any bit set to one defines the corresponding pin to be an interrupt request
signal or MODCLK. The MODCLK signal has no function after reset.
Data bus pin 9 controls the state of this register following reset. If DATA9 is set to one during reset, the
register is set to $FF, which defines all port F pins as interrupt request inputs. If DATA9 is cleared to
zero during reset, this register is set to $00, defining all port F pins as I/O pins.
3.7 Resets
Reset procedures handle system initialization and recovery from catastrophic failure. The MCU per-
forms resets with a combination of hardware and software. The system integration module determines
whether a reset is valid, asserts control signals, performs basic system configuration based on hard-
ware mode-select inputs, then passes control to the CPU.
Reset occurs when an active low logic level on the RESET pin is clocked into the SIM. Resets are gated
by the CLKOUT signal. Asynchronous resets are assumed to be catastrophic. An asynchronous reset
can occur on any clock edge. Synchronous resets are timed to occur at the end of bus cycles. If there
is no clock when RESET is asserted, reset does not occur until the clock starts. Resets are clocked in
order to allow completion of write cycles in progress at the time RESET is asserted.
Reset is the highest-priority CPU32 exception. Any processing in progress is aborted by the reset ex-
ception, and cannot be restarted. Only essential tasks are performed during reset exception processing.
Other initialization tasks must be accomplished by the exception handler routine.
3.7.1 SIM Reset Mode Selection
The logic states of certain data bus pins during reset determine SIM operating configuration. In addition,
the state of the MODCLK pin determines system clock source and the state of the BKPT pin determines
what happens during subsequent breakpoint assertions. The following table is a summary of reset
mode selection options.
PFPAR
— Port F Pin Assignment Register
$YFFA1F
15
8
7
6
5
4
3
2
1
0
NOT USED
PFPA7
PFPA6
PFPA5
PFPA4
PFPA3
PFPA2
PFPA1
PFPA0
RESET:
DATA9
DATA9
DATA9
DATA9
DATA9
DATA9
DATA9
DATA9
Table 17 Port F Pin Assignments
PFPAR Field
PFPA7
PFPA6
PFPA5
PFPA4
PFPA3
PFPA2
PFPA1
PFPA0
Port F Signal
PF7
PF6
PF5
PF4
PF3
PF2
PF1
PF0
Alternate Signal
IRQ7
IRQ6
IRQ5
IRQ4
IRQ3
IRQ2
IRQ1
MODCLK
Table 18 Reset Mode Selection
Mode Select Pin
Default Function
(Pin Left High)
Alternate Function
(Pin Pulled Low)
相關(guān)PDF資料
PDF描述
MC68332AVFC20 32-Bit Modular Microcontroller
MC68332AVFC16 32-Bit Modular Microcontroller
MC68332CFC16 32-Bit Modular Microcontroller
MC68332CFC20 32-Bit Modular Microcontroller
MC68332MFC16 32-Bit Modular Microcontroller
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68332TS 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller
MC68332VFC16 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller
MC68332VFC20 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller
MC68332VFV16 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller
MC68332VFV20 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:32-Bit Modular Microcontroller
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*