ATmega32HVB datasheet(234/273 Pages) ATMEL

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234

8042A–AVR–07/09

ATmega16HVB/32HVB

32.12 General I/O Lines Characteristics

32.12.1

Port A and B Characteristics

Notes:

1. “Max” means the highest value where the pin is guaranteed to be read as low

2. “Min” means the lowest value where the pin is guaranteed to be read as high

3. Although each I/O port can sink more than the test conditions (5 mA at V

CC = 3.3V) under steady state conditions (non-tran-

sient), the following must be observed:

- The sum of all IOL should not exceed 20 mA.

If IOL exceeds the test condition, VOL may exceed the related specification. Pins are not guaranteed to sink current greater

than the listed test condition.

4. Although each I/O port can source more than the test conditions (2 mA at VCC = 3.3V) under steady state conditions (non-

transient), the following must be observed:

- The sum of all IOH should not exceed 2 mA.

32.12.2

Port C Characteristics

Note:

1. This values is based on characterization and is not tested in production.

Table 32-12. T

A = -40 to 85°C, VCC = 3.3V (unless otherwise noted)

Symbol

Parameter

Condition

Min.

Typ.

Max.

Units

VIL

Input Low Voltage, Except

RESET pin

-0.5

0.3VCC

(1)

VIL1

Input Low Voltage,

RESET pin

0.3V

(1)

VIH

Input High Voltage,

Except RESET pin

0.6VCC

(2)

VCC + 0.5

VIH1

Input High Voltage,

RESET pin

0.9VCC

(2)

VCC + 0.5

VOL

Output Low Voltage

IOL = 5mA

0.5

VOH

Output High Voltage

IOH = 2 mA

2.3

IIL

Input Leakage

Current I/O Pin

Pin low

(absolute value)

µA

IIH

Input Leakage

Current I/O Pin

Pin high

(absolute value)

RRST

Reset Pull-up Resistor

RPU

I/O Pin Pull-up Resistor

Table 32-13. PC0-PC4 Characteristics

Symbol

Parameter

Condition

Min

Max

Units

Input Low-voltage

-0.5

0.8

VIH

Input High-voltage

2.1

5.5

(1)

Output Low-voltage

350 µA sink current

0.4

Table 32-14. PC5 Characteristic

Symbol

Parameter

Condition

Min

Max

Units

VOL

Output Low-voltage

500 µA sink current

0.2

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