HT38A5 Holtek Semiconductor Inc., HT38A5 Datasheet - Page 3

• Manufacturer Part Number: HT38A5
• Description: Ht38a5 -- 12 Melody Music Generator
• Manufacturer: Holtek Semiconductor Inc.

Pad Description
Absolute Maximum Ratings
Supply Voltage ......................... V
Input Voltage ............................ V
Note: These are stress ratings only. Stresses exceeding the range specified under Absolute Maximum Ratings may
D.C. Characteristics
Rev. 1.00
PA0~PA7
VSSA
VSS
VDD
VDDA
TEST
AUD
RES
OSC1
OSC2
V
I
I
I
I
R
V
V
V
V
Pad Name
DD
STB
OL
OH
Symbol
DD
IH1
IL1
IH2
IL2
PH
cause substantial damage to the device. Functional operation of this device at other conditions beyond those
listed in the specification is not implied and prolonged exposure to extreme conditions may affect device reliabil-
ity.
Operating Voltage
Operating Current
Standby Current (WDT Disabled)
I/O Ports Sink Current
I/O Ports Source Current
Pull-High Resistance of I/O Ports
Input High Voltage for I/O Ports
Input Low Voltage for I/O Ports
Input High Voltage (RES)
Input Low Voltage (RES)
I/O
I/O
O
O
I
I
Connection
Pull-High
Internal
or None
Parameter
SS
SS
Mode select and control pia.
Negative power supply of DAC, ground
Negative power supply, ground
Positive power supply
DAC power supply
No connection (open)
Audio output for driving a external transistor or for driving HT82V733
Reset input, active low
OSC1 and OSC2 are connected to an RC network or a crystal (by mask option)
for the internal system clock. In the case of RC operation, OSC2 is the output ter-
minal for 1/8 system clock. The system clock may come from the crystal, the two
pins cannot be floating.
0.3V to V
0
.
3V to V
DD
SS
+5.5V
+0.3V
V
5V
5V
5V
5V
5V
5V
5V
5V
5V
DD
Test Conditions
No load
f
No load
System HALT
V
V
V
3
OSC
OL
OH
IL
=0V
Storage Temperature .......................... 50 C to 125 C
Operating Temperature ......................... 25 C to 70 C
Conditions
=0.5V
=4.5V
=8MHz
Function
Min.
2.4
9.7
3.5
11
5.2
0
Typ.
16.2
2.5
22
8.7
3
8
1
4
November 2, 2006
Max.
1.5
16
44
5
5
HT38A5
Ta=25 C
Unit
mA
mA
mA
k
V
V
V
V
V
A