参数资料
型号: MC68HC08JK8CDW
厂商: 飞思卡尔半导体(中国)有限公司
英文描述: Microcontrollers
中文描述: 微控制器
文件页数: 7/8页
文件大小: 283K
代理商: MC68HC08JK8CDW
HC908JL8AD/D
AMENDMENTS TO MC68HC908JL8/D, REV. 2
Addendum to MC68HC908JL8 Technical Data
For More Information On This Product,
Go to: www.freescale.com
AMENDMENTS TO MC68HC908JL8/D, REV. 2
Keyboard Interrupt
Page 243,
Figure 15-2. Keyboard Interrupt Block Diagram
— Replace with
the following block diagram:
Computer Operating
Properly (COP)
Page 254,
16.8.2 Stop Mode
— Replace the two paragraphs:
From:
Stop mode turns off the ICLK input to the COP if the STOP_ICLKDIS bit is set
in configuration register 2 (CONFIG2). Service the COP immediately before
entering or after exiting stop mode to ensure a full COP timeout period after
entering or exiting stop mode.
After reset, the STOP_ICLKDIS bit is clear by default and ICLK is enabled
during stop mode.
To:
Stop mode turns off the ICLK input to the COP and clears the COP prescaler.
Service the COP immediately before entering or after exiting stop mode to
ensure a full COP timeout period after entering or exiting stop mode.
To prevent inadvertently turning off the COP with a STOP instruction, a
configuration option is available that disables the STOP instruction. When the
STOP bit in the configuration register has the STOP instruction is disabled,
execution of a STOP instruction results in an illegal opcode reset.
KBIE0
KBIE7
.
.
.
D
Q
CK
CLR
V
DD
MODEK
IMASKK
KEYBOARD
INTERRUPT FF
VECTOR FETCH
DECODER
ACKK
INTERNAL BUS
RESET
KBI7
KBI0
SYNCHRONIZER
KEYF
KEYBOARD
INTERRUPT
REQUEST
TO PULLUP ENABLE
TO PULLUP ENABLE
NOTE:
To prevent false interrupts, user should use software
to debounce keyboard interrupt inputs.
F
Freescale Semiconductor, Inc.
n
.
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