MC9S08JM60CLH Freescale, MC9S08JM60CLH Datasheet - Page 133
MC9S08JM60CLH
Manufacturer Part Number
MC9S08JM60CLH
Description
Manufacturer
Freescale
Datasheet
1.MC9S08JM60CLH.pdf
(388 pages)
Specifications of MC9S08JM60CLH
Cpu Family
HCS08
Device Core Size
8b
Frequency (max)
24MHz
Interface Type
SCI/SPI
Total Internal Ram Size
4KB
# I/os (max)
51
Number Of Timers - General Purpose
8
Operating Supply Voltage (typ)
3.3/5V
Operating Supply Voltage (max)
5.5V
Operating Supply Voltage (min)
2.7V
On-chip Adc
12-chx12-bit
Instruction Set Architecture
CISC
Operating Temp Range
-40C to 85C
Operating Temperature Classification
Industrial
Mounting
Surface Mount
Pin Count
64
Package Type
LQFP
Program Memory Type
Flash
Program Memory Size
60KB
Lead Free Status / RoHS Status
Compliant
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KBISC provided all enabled keyboard inputs are at their deasserted levels. KBF will remain set if any
enabled KBI pin is asserted while attempting to clear by writing a 1 to KBACK.
9.4.3
The KBI pins can be configured to use an internal pullup/pulldown resistor using the associated I/O port
pullup enable register. If an internal resistor is enabled, the KBIES register is used to select whether the
resistor is a pullup (KBEDGn = 0) or a pulldown (KBEDGn = 1).
9.4.4
When a keyboard interrupt pin is first enabled it is possible to get a false keyboard interrupt flag. To
prevent a false interrupt request during keyboard initialization, the user should do the following:
Freescale Semiconductor
1. Mask keyboard interrupts by clearing KBIE in KBISC.
2. Enable the KBI polarity by setting the appropriate KBEDGn bits in KBIES.
3. If using internal pullup/pulldown device, configure the associated pullup enable bits in PTxPE.
4. Enable the KBI pins by setting the appropriate KBIPEn bits in KBIPE.
5. Write to KBACK in KBISC to clear any false interrupts.
6. Set KBIE in KBISC to enable interrupts.
KBI Pullup/Pulldown Resistors
KBI Initialization
MC9S08JM60 Series Data Sheet, Rev. 3
Keyboard Interrupts (S08KBIV2)
133
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