MC68HC912D60A MOTOROLA [Motorola, Inc], MC68HC912D60A Datasheet - Page 50

• Manufacturer Part Number: MC68HC912D60A
• Description: Microcontrollers
• Manufacturer: MOTOROLA [Motorola, Inc]

Pinout and Signal Descriptions
3.5.13 Inverted ECLK (ECLK)
3.5.14 Calibration reference (CAL)
3.5.15 Clock generation module test (CGMTST)
3.5.16 TEST
Technical Data
50
Pin Name
RESET
EXTAL
XTAL
80-pin
35
36
34
Pin Number
Table 3-2. MC68HC912D60A Signal Description Summary
112-pin
The ECLK pin (PE7) can be used to latch the address for de-
multiplexing. It has the same behavior as the ECLK, except is inverted.
In expanded modes this pin is used to enable the drive control of external
buses during external reads. Use of the ECLK is controlled by the NDBE
and DBENE bits in the PEAR register.
The CAL pin (PE7) is the output of the Slow Mode programmable clock
divider, SLWCLK, and is used as a calibration reference. The SLWCLK
frequency is equal to the crystal frequency out of reset and always has
a 50% duty. If the DBE function is enabled it will override the enabled
CAL output. The CAL pin output is disabled by clearing CALE bit in the
PEAR register.
The CGMTST pin (PE6) is the output of the clocks tested when CGMTE
bit is set in PEAR register. The PIPOE bit must be cleared for the clocks
to be tested.
This pin is used for factory test purposes. It is recommended that this
pin is not connected in the application, but it may be bonded to 5.5 V max
without issue. Never apply voltage higher than 5.5 V to this pin.
47
48
46
Freescale Semiconductor, Inc.
For More Information On This Product,
Crystal driver and external clock input pins.
An active low bidirectional control signal, RESET acts as an input to
initialize the MCU to a known start-up state, and an output when COP or
clock monitor causes a reset.
Pinout and Signal Descriptions
Go to: www.freescale.com
Description
MC68HC912D60A — Rev 3.0
MOTOROLA