Pad Name

I/O

Options

Description

RES

I

¾

Schmitt trigger reset input. Active low

VDD

¾¾

Positive power supply

OSC1

OSC2

I

O

Crystal

or RC

OSC1, OSC2 are connected to an RC network or Crystal (determined by op-

tions) for the internal system clock. In the case of RC operation, OSC2 is the

output terminal for 1/4 system clock.

* All pull-high resistors are controlled by an option bit.

Absolute Maximum Ratings

Storage Temperature ............................

-50°Cto125°C

Operating Temperature...........................

-40°Cto85°C

Note: These are stress ratings only. Stresses exceeding the range specified under

²Absolute Maximum Ratings² may

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.

D.C. Characteristics

Ta=25

°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Conditions

Operating Voltage

2.2

¾

5.5

V

3.3

¾

5.5

V

Operating Current (Crystal OSC)

3V

¾

0.6

1.5

mA

5V

¾

24

mA

Operating Current (RC OSC)

3V

¾

0.8

1.5

mA

5V

¾

2.5

4

mA

Operating Current (Crystal OSC)

5V

¾

35

mA

Standby Current (WDT Enabled)

3V

No load, system HALT

¾¾

5

mA

5V

¾¾

10

mA

Standby Current (WDT Disabled)

3V

No load, system HALT

¾¾

1

mA

5V

¾¾

2

mA

Input Low Voltage for I/O Ports,

TMR and INT

¾¾

0

¾

V

Input High Voltage for I/O Ports,

TMR and INT

¾¾

¾

V

Input Low Voltage (RES)

¾¾

0

¾

V

Input High Voltage (RES)

¾¾

¾

V

Low Voltage Reset

¾ LVRenabled

2.7

3.0

3.3

V

I/O Port Sink Current

3V

48

¾

mA

5V

10

20

¾

mA

I/O Port Source Current

3V

-2

-4

¾

mA

5V

-5

-10

¾

mA

Pull-high Resistance

3V

¾

20

60

100

k

W

5V

¾

10

30

50

k

W

HT48R05A-1/HT48C05/HT48R06A-1/HT48C06

Rev. 1.10

3

June 9, 2004