LM8322JGR8/NOPB National Semiconductor, LM8322JGR8/NOPB Datasheet - Page 17
LM8322JGR8/NOPB
Manufacturer Part Number
LM8322JGR8/NOPB
Description
IC MOBILE I/O COMPAN 36MICRARRAY
Manufacturer
National Semiconductor
Datasheet
1.LM8322JGR8NOPB.pdf
(42 pages)
Specifications of LM8322JGR8/NOPB
Applications
*
Mounting Type
Surface Mount
Package / Case
36-Micro Array
For Use With
LM8322EVALKIT - BOARD EVALUATION LM8322
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
LM8322JGR8
LM8322JGR8TR
LM8322JGR8TR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
LM8322JGR8/NOPB
Manufacturer:
National Semiconductor
Quantity:
135
keyboard matrix. The default GPIO configuration is an input
with the pullup disabled.
13.1 USING THE CONFIG_X PINS FOR GPIO
The CONFIG_1 and CONFIG_2 pins are available for use as
GPIO pins after power-on or reset. However, stable states
must be provided on these pins during power-on or reset to
select the ACCESS.bus (I
External pullup or pulldown resistors can be used to pull either
CONFIG_x pin low, while retaining the ability to drive it to an-
other state when used as a GPIO pin.
CONFIG_2 has two alternate functions, in addition to GPIO.
It can be configured as a multiplexer output using the
2
C) bus address.
FIGURE 11. GPIO Port State Change Timing
17
WRITE_CFG command (0x81), in which case it will not be
available as a GPIO pin. It can also be configured as a PWM
output, which also would override its use as a GPIO pin.
13.2 GPIO TIMING
When a WRITE_PORT_STATE command (0x86) is received,
the GPIO outputs do not change to their new states immedi-
ately or simultaneously. The first one changes 54 µs after the
command is acknowledged, and the others change at inter-
vals of 7.3 µs, as shown in Figure 11.
30013611
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