MC9S12E128CPV Freescale Semiconductor, MC9S12E128CPV Datasheet - Page 449
MC9S12E128CPV
Manufacturer Part Number
MC9S12E128CPV
Description
Microcontrollers (MCU) 16 Bit 16MHz
Manufacturer
Freescale Semiconductor
Datasheet
1.MC9S12E128CPV.pdf
(606 pages)
Specifications of MC9S12E128CPV
Data Bus Width
16 bit
Program Memory Type
Flash
Program Memory Size
128 KB
Data Ram Size
8 KB
Interface Type
SCI, SPI
Maximum Clock Frequency
25 MHz
Number Of Programmable I/os
92
Number Of Timers
16 bit
Operating Supply Voltage
3.135 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Package / Case
LQFP-112
Minimum Operating Temperature
- 40 C
On-chip Adc
10 bit
On-chip Dac
8 bit, 2 Channel
Lead Free Status / Rohs Status
No RoHS Version Available
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15.2.1
Debugging control logic communicates with external devices serially via the single-wire background
interface pin (BKGD). During reset, this pin is a mode select input which selects between normal and
special modes of operation. After reset, this pin becomes the dedicated serial interface pin for the
background debug mode.
15.2.2
This pin is used to tag the high byte of an instruction. When instruction tagging is on, a logic 0 at the falling
edge of the external clock (ECLK) tags the high half of the instruction word being read into the instruction
queue.
15.2.3
This pin is used to tag the low byte of an instruction. When instruction tagging is on and low strobe is
enabled, a logic 0 at the falling edge of the external clock (ECLK) tags the low half of the instruction word
being read into the instruction queue.
Freescale Semiconductor
•
•
•
•
•
BKGD — Background interface pin
TAGHI — High byte instruction tagging pin
TAGLO — Low byte instruction tagging pin
BKGD and TAGHI share the same pin.
TAGLO and LSTRB share the same pin.
BKGD — Background Interface Pin
TAGHI — High Byte Instruction Tagging Pin
TAGLO — Low Byte Instruction Tagging Pin
Generally these pins are shared as described, but it is best to check the
device overview chapter to make certain. All MCUs at the time of this
writing have followed this pin sharing scheme.
MC9S12E128 Data Sheet, Rev. 1.07
NOTE
Chapter 15 Background Debug Module (BDMV4)
449
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