MC68HC08JL8_03 Datasheet, PDF (7/8 Pages) Freescale Semiconductor, Inc – Microcontrollers

Freescale Semiconductor, Inc.
HC908JL8AD/D
AMENDMENTS TO MC68HC908JL8/D, REV. 2
AMENDMENTS TO MC68HC908JL8/D, REV. 2
Keyboard Interrupt
Page 243, Figure 15-2. Keyboard Interrupt Block Diagram — Replace with
the following block diagram:
NOTE:
To prevent false interrupts, user should use software
to debounce keyboard interrupt inputs.
KBI0
.
KBIE0
.
TO PULLUP ENABLE
.
KBI7
V_DD
CLR
D
Q
CK
ACKK
RESET
KEYBOARD
INTERRUPT FF
INTERNAL BUS
VECTOR FETCH
DECODER
KEYF
SYNCHRONIZER
KEYBOARD
INTERRUPT
REQUEST
IMASKK
KBIE7
TO PULLUP ENABLE
MODEK
Computer Operating Page 254, 16.8.2 Stop Mode — Replace the two paragraphs:
Properly (COP)
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.
Addendum to MC68HC908JL8 Technical Data
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