mc68hc912bd32 Freescale Semiconductor, Inc, mc68hc912bd32 Datasheet - Page 239
mc68hc912bd32
Manufacturer Part Number
mc68hc912bd32
Description
16-bit Device Composed Of Standard On-chip Peripherals
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MC68HC912BD32.pdf
(292 pages)
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5-dev
(TARGET MCU)
TRANSMIT 1
TRANSMIT 0
PERCEIVED
OF BIT TIME
SPEEDUP PULSE
BKGD PIN
BKGD PIN
DRIVE TO
B CLOCK
(TARGET
B CLOCK
TARGET MCU
HOST
HOST
START
MCU)
HOST
START OF BIT
PERCEIVED
SYNCHRONIZATION
UNCERTAINTY
TIME
Figure 57 BDM Target to Host Serial Bit Timing (Logic 1)
Figure 56 BDM Host to Target Serial Bit Timing
HIGH-IMPEDANCE
speed up rising edges. Since the target does not drive the BKGD pin
during this period, there is no need to treat the line as an open-drain
signal during host-to-target transmissions.
Freescale Semiconductor, Inc.
For More Information On This Product,
10 CYCLES
R-C RISE
10 CYCLES
Go to: www.freescale.com
10 CYCLES
Development Support
TARGET SENSES BIT
HIGH-IMPEDANCE
HOST SAMPLES
BKGD PIN
HIGH-IMPEDANCE
MC68HC912BD32 Rev 1.0
Background Debug Mode
Development Support
EARLIEST
START OF
EARLIEST
START OF
NEXT BIT
NEXT BIT
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