MC912DG128ACPV Freescale Semiconductor, MC912DG128ACPV Datasheet - Page 127

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MC912DG128ACPV

Manufacturer Part Number
MC912DG128ACPV
Description
IC MCU 128K FLASH 8MHZ 112-LQFP
Manufacturer
Freescale Semiconductor
Series
HC12r
Datasheet

Specifications of MC912DG128ACPV

Core Processor
CPU12
Core Size
16-Bit
Speed
8MHz
Connectivity
CAN, I²C, SCI, SPI
Peripherals
POR, PWM, WDT
Number Of I /o
69
Program Memory Size
128KB (128K x 8)
Program Memory Type
FLASH
Eeprom Size
2K x 8
Ram Size
8K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 16x8/10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
112-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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MC68HC912DT128A — Rev 4.0
MOTOROLA
CAUTION:
NOTE:
EEDIV[9:0] — Prescaler divider
An incorrect or uninitialized value on EEDIV can result in overstress of
EEPROM array during program/erase operation. It is also strongly
recommend not to program EEPROM with oscillator frequencies less
than 250 Khz.
INT[A] denotes the round down integer value of A. Program/erase cycles
will not be activated when EEDIV = 0.
Loaded from SHADOW word at reset.
Read anytime. Write once in normal modes (SMODN =1) if EELAT =
0 and anytime in special modes (SMODN =0) if EELAT = 0.
The prescaler divider is required to produce a self-time clock with a
fixed frequency around 28.6 Khz for the range of oscillator
frequencies. The divider is set so that the oscillator frequency can be
divided by a divide factor that can produce a 35 µs ± 2µs timebase.
The EEDIV value is determined by the following formula:
Freescale Semiconductor, Inc.
For More Information On This Product,
Osc Freq.
500 Khz
250 Khz
16 Mhz
8 Mhz
4 Mhz
2 Mhz
1 Mhz
Go to: www.freescale.com
EEPROM Memory
EEDIV
Table 9-1. EEDIV Selection
Osc Period
=
62.5ns
125ns
250ns
500ns
1µs
2µs
4µs
INT
[
EXTALi
Divide Factor
(hz) x 35
560
280
140
70
35
18
9
×10
6 –
EEPROM Control Registers
+
0.5
]
EEPROM Memory
EEDIV
$008C
$0230
$0118
$0046
$0023
$0012
$0009
Technical Data
127

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