MM912H634DM1AER2 Freescale Semiconductor, MM912H634DM1AER2 Datasheet - Page 9

• Manufacturer Part Number: MM912H634DM1AER2
• Description: 16-bit Microcontrollers - MCU 64KS12 LIN2XLS/HS ISENSE
• Manufacturer: Freescale Semiconductor

Specifications of MM912H634DM1AER2

• Rohs: yes
• Core: HCS12
• Processor Series: MM912F634
• Data Bus Width: 16 bit
• Maximum Clock Frequency: 20 MHz
• Program Memory Size: 32 KB
• Data Ram Size: 2 KB
• On-chip Adc: Yes
• Operating Supply Voltage: 5.5 V to 18 V
• Operating Temperature Range: - 40 C to + 105 C
• Package / Case: LQFP-48
• Mounting Style: SMD/SMT
• A/d Bit Size: 10 bit
• A/d Channels Available: 15
• Interface Type: SPI
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 15
• Number Of Timers: 1
• Program Memory Type: Flash
• Supply Voltage - Max: 18 V
• Supply Voltage - Min: 5.5 V

Table 3. MM912F634 Pin Description (continued)
Pin Assignment
Freescale Semiconductor
Note:
Pin #
4.
5.
39
40
41
42
43
44
45
46
47
48
An optional filter capacitor C
An optional filter capacitor C
performance.
performance.
Pin Name
RESET_A
ISENSEH
ISENSEL
TEST_A
RESET
BKGD
TCLK
LS2
NC
NC
Low Side Output 2
Current Sense Pins L
Current Sense Pins H
Not connected Pin
Test Mode Pin
Test Clock Input
MCU Reset Pin
MCU Background Debug
and Mode Pin
Not connected Pin
Reset I/O
VSENSE
Lx
Formal Name
is recommended to be placed between the board connector and R
is recommended to be placed between the board connector and R
Low Side output 2 used to drive small inductive loads like relays. The output is
short-circuit protected, includes active clamp circuitry and can be also controlled by
the PWM module.
See
Current Sense differential input “Low”. This pin is used in combination with
ISENSEH to measure the voltage drop across a shunt resistor. See
“Current Sense Module -
device configurations.
Current Sense differential input “High”. This pin is used in combination with
ISENSEL to measure the voltage drop across a shunt resistor.
“Current Sense Module -
device configurations.
This pin is reserved for alternative function and should be left floating.
Analog die Test Mode pin for Test Mode only. This pin must be grounded in user
mode.
Test Mode Clock Input pin for Test Mode only. The pin can be used to disable the
internal watchdog for development purpose in user mode. See
“Window
Bidirectional Reset I/O pin of the analog die. Active low signal. Internal pull-up. V
based. See
The RESET pin is an active low bidirectional control signal. It acts as an input to
initialize the MCU to a known start-up state, and an output when an internal MCU
function causes a reset. The RESET pin has an internal pull-up device to EVDDX.
The BKGD/MODC pin is used as a pseudo-open-drain pin for the background
debug communication. It is used as MCU operating mode select pin during reset.
The state of this pin is latched to the MODC bit at the rising edge of RESET. The
BKGD pin has a pull-up device.
This pin is reserved for alternative function and should be left floating or connected
to GND.
Section 4.12, “Low Side Drivers - LSx"
Watchdog". The pin is recommended to be grounded in user mode.
Section 4.7,
“Resets". To be externally connected to the RESET pin.
ISENSE". Note: This pin function is not available on all
ISENSE". Note: This pin function is not available on all
Description
Lx
to GND for increased ESD
VSENSE
MM912F634 Pin Description
to GND for increased ESD
Section 4.20,
Section 4.9,
Section 4.20,
MM912F634
DDX
9