14

ADVANCE INFORMATION

8x930Ax UNIVERSAL SERIAL BUS (USB) MICROCONTROLLER

I

TL

Logical 1-to-0

Transition Current

(Port 1, 2,3)

-650

µA

V

R

RST

RST Pulldown

Resistor

40

225

K

Ω

C

IO

10

pF

F

T

I

PD

Powerdown Current

— Normal powerdown

— USB suspend

25

145

50

175

µA

I

Idle Mode I

CC

40

mA

PLLSEL = 110

3MHz – FS

(in low clock mode)

100

PLLSEL = 110

12MHz – FS

(not in low clock

mode)

30

PLLSEL = 001

3MHz – LS

55

PLLSEL = 100

6 MHz – LS

Table 9. DC Characteristics at Operating Conditions (Continued)

Symbol

Parameter

Min

Typical (1)

Max

Units

Test Conditions

NOTE:

1.

Typical values are obtained using V

2.

Under steady state (non-transient) conditions, I

Maximum I

Maximum I

Port 0: 26 mA

Ports 1-3: 15 mA

Maximum Total I

If I

to sink current greater than the listed test conditions.

3.

Capacitive loading on Ports 0 and 2 may cause spurious noise pulses above 0.4 V on the low-level

outputs of ALE and Ports 1, 2 and 3. The noise is due to external bus capacitance discharging into the

Port 0 and Port 2 pins when these pins change from 1 to 0. In applications where capacitive loading

exceeds 100pF, the noise pulses on these signals may exceed 0.8 V. It may be desirable to qualify

ALE or other signals with a Schmitt Trigger or CMOS-level input logic.

4.

Capacitive loading on Ports 0 and 2 cause the V

tion when the address lines are stabilizing.

5.

The abbreviations “LS” and “FS” indicate “Low Speed” and “Full Speed,” respectively.