MC912DG128AMPVE Freescale Semiconductor, MC912DG128AMPVE Datasheet - Page 127

• Manufacturer Part Number: MC912DG128AMPVE
• Description: IC MCU 128K FLASH 8MHZ 112-LQFP
• Manufacturer: Freescale Semiconductor
• Series: HC12r

Specifications of MC912DG128AMPVE

• 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 ~ 125°C
• Package / Case: 112-LQFP
• Processor Series: HC912D
• Core: HC12
• Data Bus Width: 16 bit
• Data Ram Size: 8 KB
• Interface Type: CAN/I2C/SCI/SPI
• Maximum Clock Frequency: 8 MHz
• Number Of Programmable I/os: 69
• Number Of Timers: 8
• Maximum Operating Temperature: + 125 C
• Mounting Style: SMD/SMT
• 3rd Party Development Tools: EWHCS12
• Minimum Operating Temperature: - 40 C
• On-chip Adc: 2 (8-ch x 10-bit)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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