Pad Assignment

Pin Name

I/O

Mask

Option

Description

LED0/OUT0

O

OMOD

Outputs a continuous duty cycle or pulse or single period duty cycle

depending upon the OMOD configuration option.

LED1/OUT1/BZ

O

L1xx Option

Indicates the system operational status. The LED related options deter-

mine the LED or Buzzer output format.

LED2/OUT2/BZ

O

L2xx Option

RESET

I

¾

Schmitt trigger reset input, active low.

OSC1

OSC2

I

O

Crystal

or IRC

The system oscillator can be external crystal oscillator or internal RC

oscillator determined by a configuration option for the internal system

clock. OSC, OSC2 are connected to an external crystal when the exter-

nal crystal oscillator is selected.

VDD

¾¾

Positive power supply

VSS

¾

¾

Negative power supply, ground

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 reliability.

D.C. Characteristics

Ta=25

°C

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

Conditions

Operating Voltage

¾

2.2

¾

5.5

V

Operating Current

(Crystal OSC, RC OSC)

3V

No load, all output pins

non-toggle*,

¾¾

3

mA

5V

¾¾

5

mA

Operating Current

(RC OSC)

3V

¾¾

2

mA

5V

¾¾

3

mA

Standby Current (WDT Enabled

and WDT RC OSC On)

¾

No load, system HALT

¾¾

1

mA

Input Low Voltage (RES)

¾¾

0

¾

V

Input High Voltage (RES)

¾¾

¾

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

Note:

²*² LED1/2 has no carrier, level, and all options set to the lowest frequency. Measured in the non-toggle state.

HT13R90

Rev. 1.10

2

July 10, 2007