MC9S12E128CFU Freescale Semiconductor, MC9S12E128CFU Datasheet - Page 457
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MC9S12E128CFU
Manufacturer Part Number
MC9S12E128CFU
Description
IC MCU 128K FLASH 25MHZ 80-QFP
Manufacturer
Freescale Semiconductor
Series
HCS12r
Specifications of MC9S12E128CFU
Core Processor
HCS12
Core Size
16-Bit
Speed
25MHz
Connectivity
EBI/EMI, I²C, SCI, SPI
Peripherals
POR, PWM, WDT
Number Of I /o
60
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
2.35 V ~ 2.75 V
Data Converters
A/D 16x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
80-QFP
Data Bus Width
16 bit
Data Ram Size
8 KB
Interface Type
SCI, SPI
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
60
Number Of Timers
16 bit
Operating Supply Voltage
3.135 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit
On-chip Dac
8 bit, 2 Channel
For Use With
M68EVB912E128 - BOARD EVAL FOR MC9S12E128/64
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Lead Free Status / Rohs Status
No RoHS Version Available
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sub-block, the type of breakpoint used determines if BDM becomes active before or after execution of the
next instruction.
In active BDM, the BDM registers and standard BDM firmware lookup table are mapped to addresses
0xFF00 to 0xFFFF. BDM registers are mapped to addresses 0xFF00 to 0xFF07. The BDM uses these
registers which are readable anytime by the BDM. However, these registers are not readable by user
programs.
15.4.3
Hardware commands are used to read and write target system memory locations and to enter active
background debug mode. Target system memory includes all memory that is accessible by the CPU such
as on-chip RAM, EEPROM, FLASH EEPROM, I/O and control registers, and all external memory.
Hardware commands are executed with minimal or no CPU intervention and do not require the system to
be in active BDM for execution, although they can continue to be executed in this mode. When executing
a hardware command, the BDM sub-block waits for a free CPU bus cycle so that the background access
does not disturb the running application program. If a free cycle is not found within 128 clock cycles, the
CPU is momentarily frozen so that the BDM can steal a cycle. When the BDM finds a free cycle, the
operation does not intrude on normal CPU operation provided that it can be completed in a single cycle.
However, if an operation requires multiple cycles the CPU is frozen until the operation is complete, even
though the BDM found a free cycle.
Freescale Semiconductor
BDM Hardware Commands
If an attempt is made to activate BDM before being enabled, the CPU
resumes normal instruction execution after a brief delay. If BDM is not
enabled, any hardware BACKGROUND commands issued are ignored by
the BDM and the CPU is not delayed.
MC9S12E128 Data Sheet, Rev. 1.07
NOTE
Chapter 15 Background Debug Module (BDMV4)
457
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