S9S08DZ60F2MLH Freescale Semiconductor, S9S08DZ60F2MLH Datasheet - Page 351
S9S08DZ60F2MLH
Manufacturer Part Number
S9S08DZ60F2MLH
Description
8-bit Microcontrollers - MCU M74K MASK ONLY-AUTO
Manufacturer
Freescale Semiconductor
Datasheet
1.S9S08DZ60F2MLH.pdf
(416 pages)
Specifications of S9S08DZ60F2MLH
Rohs
yes
Core
HCS08
Processor Series
MC9S08DZ60
Data Bus Width
8 bit
Maximum Clock Frequency
40 MHz
Program Memory Size
60 KB
Data Ram Size
4 K
On-chip Adc
Yes
Operating Supply Voltage
2.7 V to 5.5 V
Operating Temperature Range
- 40 C to + 125 C
Package / Case
LQFP-64
Mounting Style
SMD/SMT
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Figure 17-2
The host is asynchronous to the target so there is a 0-to-1 cycle delay from the host-generated falling edge
to where the target perceives the beginning of the bit time. Ten target BDC clock cycles later, the target
senses the bit level on the BKGD pin. Typically, the host actively drives the pseudo-open-drain BKGD pin
during host-to-target transmissions to speed up rising edges. Because the target does not drive the BKGD
pin during the host-to-target transmission period, there is no need to treat the line as an open-drain signal
during this period.
Freescale Semiconductor
SYNCHRONIZATION
PERCEIVED START
(TARGET MCU)
BDC CLOCK
UNCERTAINTY
TRANSMIT 1
TRANSMIT 0
OF BIT TIME
HOST
HOST
shows an external host transmitting a logic 1 or 0 to the BKGD pin of a target HCS08 MCU.
Figure 17-2. BDC Host-to-Target Serial Bit Timing
MC9S08DZ60 Series Data Sheet, Rev. 4
TARGET SENSES BIT LEVEL
10 CYCLES
EARLIEST START
Chapter 17 Development Support
OF NEXT BIT
351
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