
W561XXX DESIGN GUIDE
- 8 -
OSCI, OSCO, OSCSEL
The master frequency (3 Mhz) of the W561xxx can be generated by either of two oscillator
types: one is ring oscillator, the other is crystal oscillator. Connect OSCI to VDD via R
OSC
and left OSCO open gives the former selection, while connect a crystal between OSCI &
OSCO picks the latter selection. For crystal oscillator, the master frequency can be observed
on the OSCO pin. The OSCSEL pin is used to select one of these two oscillator types. The
OSCSEL is internally kept floating, users have to connect the OSCSEL pin to whether VDD
for the selection of crystal oscillator, or VSS for the selection of the ring oscillator.
OSCSEL must connect to VDD or VSS for W561xxx, and there is no OSCSEL pin for
W562XX.
ABSOLUTE MAXIMUM RATINGS
ITEM
SYMBOL
V
DD
- V
SS
V
IN
T
STG
T
OPR
CONDITIONS
-
All Inputs
-
-
RATED VALUE
-0.3 - +7.0
V
SS
-0.3 - V
DD
+0.3
-55 - +150
0 - +70
UNIT
V
V
°
C
°
C
Power Supply
Input Voltage
Storage Temp.
Operating Temp.
NOTE: Operating the device under conditions beyond those indicated above may cause
permanent damage or affect device reliability.
ELECTRICAL CHARACTERISTICS
DC PARAMETERS
(V
DD
V
SS
= 3.0V, Fm = 3 MHz, T
A
= 25
°
C; unless otherwise specified)
PARAMETER
Operating Voltage
Standby Current
Operating Current
( Crystal Type )
Operating Current
( Ring Type )
Input Low Voltage
Input High Voltage
Input Current for P0,
P1,P2
Input Current for /RESET
SYM.
V
DD
I
DD1
No load, No Playing @5V
I
OP1
No load
I
OP2
No load
CONDITIONS
-
MIN.
2.4
-
-
-
V
SS
0.7V
DD
-
TYP.
-
-
-
-
-
-
-
MAX.
5.5
2
1
1
0.3V
DD
V
DD
-6
UNIT
V
μ
A
m
A
mA
V
V
μ
A
V
IL
V
IH
I
IN
All Input Pins
All Input Pins
V
DD
= 3V, V
IN
= 0V
I
IN1
V
DD
= 3V, V
IN
= 0V
-
-
-6
μ
A
mA
mA
mA
Output Current of P1,
P2, P3
DAC1/2 (D/A full Scale)
I
OL
I
OH
I
DAC
V
DD
= 4.5V, R
L
= 100
R
PL
TEST, OSCSEL Pins
V
DD
= 3V, V
OUT
= 0.4V
V
DD
= 3V, V
OUT
= 2.7V
5
-3
-4.0
-
-
-
-
-5.0
-6.0
Pull-low Resistor
100
-
-
K