- 您現在的位置：買賣IC網 > PDF目錄369230 > 68HC05PL4 (Motorola, Inc.) 8-Bit Microcontroller Units (MCU).(8位微控制器) PDF資料下載
參數資料
| 型號： | 68HC05PL4 |
| 廠商： | Motorola, Inc. |
| 英文描述： | 8-Bit Microcontroller Units (MCU).(8位微控制器) |
| 中文描述： | 8位微控制器單元（MCU）。（8位微控制器） |
| 文件頁數： | 31/98頁 |
| 文件大小： | 1019K |
| 代理商： | 68HC05PL4 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁當前第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁
April 30, 1998
GENERAL RELEASE SPECIFICATION
MC68HC05PL4
REV 2.0
INTERRUPTS
MOTOROLA
4-7
4.7
KEYBOARD INTERRUPT
Port B has internal pull-up resistors (typically 100K
) and are enabled individually
by setting the corresponding bit in the Pull-Up Enable Register (PUER).
PB0 to PB3 have keyboard interrupt functions, with individual enable and flag bits
in registers $000B and $000C.
A falling edge on any one of the keyboard interrupt pins sets the corresponding
KIF flag in the Keyboard Interrupt Flag Register (KIFR) located at $000C. If the
associated KIE bit in the Keyboard Interrupt Enable Register (KIER) located at
$000B is also set, a keyboard interrupt is generated to the processor.
KIFx can be cleared by writing “1” to the bit. Resets clear both KIFR and KIER.
Keyboard Interrupt can wake up the MCU from WAIT mode or STOP mode.
NOTE
Since the Keyboard Interrupt function is associated with PB0-PB3, any falling
edge on these pins sets the corresponding KIF flag in the Keyboard Interrupt Flag
Register. Therefore, PB0-PB3 should be connected to internal or external pull-
ups, and KIFR cleared before these port pins switch from I/O to keyboard
application.
To use the keyboard interrupt function to exit from WAIT or STOP, it must be
enabled prior entering either of the power saving modes.
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
PUER
$000A
RESET
R
W
PUL7
PUL6
PUL5
PUL4
PUL3
PUL2
PUL1
PUL0
0
0
0
0
0
0
0
0
Figure 4-5. Pull-Up Enable Register (PUER)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
KIER
$000B
RESET
R
W
KIE3
KIE2
KIE1
KIE0
0
0
0
0
0
0
0
0
Figure 4-6. Keyboard Interrupt Enable Register (KIER)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
KIFR
$000C
RESET
R
W
KIF3
KIF2
KIF1
KIF0
0
0
0
0
0
0
0
0
Figure 4-7. Keyboard Interrupt Flag Register (KIFR)
相關PDF資料 |
PDF描述 |
|---|---|
| 68HC05PL4B | 8-Bit Microcontroller Units (MCU).(8位微控制器) |
| 68HC705PL4 | 8-Bit Microcontroller Units (MCU).(8位微控制器) |
| 68HC705PL4B | 8-Bit Microcontroller Units (MCU).(8位微控制器) |
| 68HC908JB8FS | Freescale Semiconductor, Inc. |
| 69190-405 | 50/100M SOT-23 CMOS RF LDO REGULATORS |
相關代理商/技術參數 |
參數描述 |
|---|---|
| 68HC05PL4B | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Industry standard 8-bit M68HC05 CPU core |
| 68HC05SB7 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:SPECIFICATION (General Release) |
| 68HC05V12 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification |
| 68HC05X1 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:SPECIFICATION (General Release) |
| 68HC070KH12 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:8 BIT MICROCONTROLLER UNITS |
發布緊急采購，3分鐘左右您將得到回復。