UR8HC007-001 Datasheet, PDF (3/18 Pages) Semtech Corporation – Input Device and Power Management Companion IC for Jupiter Devices

PIN DEFINITIONS
Pin Numbers
Mnemonic
Power Supply
VDD
AVREF
AVSS
VSS
VSS1
Reset
_RESET
Oscillator pins
OSCI
_OSCO
Keyboard /
Event Wake-up
_WKUP
Scanned
matrix pins
ROW0-ROW7
COL0-COL7
COL8-COL11
COL12-COL13
COL14-COL15
PS/2 ports
PS2EN
IPDAT
IPCLK
EX0DAT
EX0CLK
EX1DAT
EX1CLK
QFP
71
72
73
30
24
Type
PWR
AI
PWR
PWR
PWR
25
I
28
I
29
O
Name and Function
Positive Supply Voltage
Positive analog reference voltage
Ground: analog signal
Ground: negative supply voltage
Auxiliary Ground; must be tied to
pin 30
Controller hardware reset pin:
when at Low-level, this pin holds the
UR8HC007in a reset state. This pin
must be held at a logic-low until Power
Supply voltage (VDD) reaches the
minimum operating level (2.7V).
Oscillator input: connect ceramic
resonator with built-in load capacitors
or CMOS clock from external oscillator
4 MHz operating frequency
Oscillator Output: connect ceramic
resonator with built-in load capacitors
or keep open if external oscillator
is used
59
I/pD
Wake-up: wakes up the chip if
there is a key press in the scanned
keyboard matrix (Active-Low) or drives
the pin High when running
62-55
54-47
38-35
27-26
79-78
27
9
6
8
5
7
4
I
Row matrix outputs
O
Column matrix outputs
O
I5V/nD5V
I5V/nD5V
I5V/nD5V
I5V/nD5V
I5V/nD5V
I5V/nD5V
Control output: when Low, disables
PS/2 communications by holding the
PS/2 Clock lines low
PS/2 Data line for Internal Pointing
Device
PS/2 Clock line for Internal Pointing
Device
PS/2 Data line for External Device 0
PS/2 Clock line for External Device 0
PS/2 Data line for External Device 1
PS/2 Clock line for External Device 1
Copyright ©1998-2001 Semtech Corporation
3
DOC8-007-001-DS-108
www.semtech.com