MC68HC16Z1MAG16 Freescale Semiconductor, MC68HC16Z1MAG16 Datasheet - Page 102
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MC68HC16Z1MAG16
Manufacturer Part Number
MC68HC16Z1MAG16
Description
IC MPU 16BIT 16MHZ 144-LQFP
Manufacturer
Freescale Semiconductor
Series
HC16r
Datasheet
1.MC68HC16Z1VEH16.pdf
(500 pages)
Specifications of MC68HC16Z1MAG16
Core Processor
CPU16
Core Size
16-Bit
Speed
16MHz
Connectivity
EBI/EMI, SCI, SPI
Peripherals
POR, PWM, WDT
Number Of I /o
16
Program Memory Type
ROMless
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 125°C
Package / Case
144-LQFP
Processor Series
HC16Z
Core
CPU16
Data Bus Width
16 bit
Data Ram Size
1 KB
Interface Type
SCI, QSPI
Maximum Clock Frequency
16 MHz
Number Of Programmable I/os
16
Number Of Timers
2
Maximum Operating Temperature
+ 125 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit, 8 Channel
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MC68HC16Z1MAG16
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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4.14.3 Opcode Tracking and Breakpoints
4.14.4 Background Debug Mode
4.14.4.1 Enabling BDM
4.14.4.2 BDM Sources
4.14.4.3 Entering BDM
4-42
Breakpoints on instructions that are flushed from the pipeline before execution are not
acknowledged. Operand breakpoints are always acknowledged. There is no break-
point acknowledge bus cycle when BDM is entered. Refer to
knowledge Cycle
Breakpoints are acknowledged after a tagged instruction has executed, that is, when
the instruction is copied from pipeline stage B to stage C. Stage C contains the opcode
of the previous instruction when execution of the current instruction begins.
When an instruction is tagged, IPIPE0/IPIPE1 reflect the start of execution and the ap-
propriate number of pipeline advances and operand fetches before the breakpoint is
acknowledged. If background debug mode is enabled, these signals model the pipe-
line before BDM is entered.
Microprocessor debugging programs are generally implemented in external software.
CPU16 BDM provides a debugger implemented in CPU microcode. BDM incorporates
a full set of debug options. Registers can be viewed and altered, memory can be read
or written, and test features can be invoked. BDM is an alternate CPU16 operating
mode. While the CPU16 is in BDM, normal instruction execution is suspended, and
special microcode performs debugging functions under external control. While in
BDM, the CPU16 ceases to fetch instructions through the data bus and communicates
with the development system through a dedicated serial interface.
The CPU16 samples the BKPT input during reset to determine whether to enable
BDM. When BKPT is asserted at the rising edge of the RESET signal, BDM operation
is enabled. BDM remains enabled until the next system reset. If BKPT is at logic level
one on the trailing edge of RESET, BDM is disabled. BKPT is relatched on each rising
transition of RESET. BKPT is synchronized internally and must be asserted for at least
two clock cycles before negation of RESET.
When BDM is enabled, external breakpoint hardware and the BGND instruction can
cause the CPU16 to enter BDM. If BDM is not enabled when a breakpoint occurs, a
breakpoint exception is processed.
When the CPU16 detects a breakpoint or decodes a BGND instruction when BDM is
enabled, it suspends instruction execution and asserts the FREEZE signal. Once
FREEZE has been asserted, the CPU16 enables the BDM serial communication hard-
ware and awaits a command. Assertion of FREEZE causes opcode tracking signals
IPIPE0 and IPIPE1 to change definition and become serial communication signals
DSO and DSI. FREEZE is asserted at the next instruction boundary after the assertion
for more information about breakpoints.
Freescale Semiconductor, Inc.
For More Information On This Product,
CENTRAL PROCESSING UNIT
Go to: www.freescale.com
5.6.4.1 Breakpoint Ac-
M68HC16 Z SERIES
USER’S MANUAL
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