Z8C520PSC データシートの表示（PDF） - Zilog

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Z8C520PSC

1.5 MBPS USB LOW-POWER DEVICE CONTROLLER FOR MULTIPROTOCOL POINTING DEVICES

Zilog 

Zilog

Z8E520/C520

1.5 MBPS USB Device Controller

Port B. Port B (6–7) is configured as a serial communica- Port B (6) has a programmable internal pullup of 7.5 K ±

tion port as follows:

30%. For USB Mode, Port B (7) requires an external pullup

USB

PS/2 RS232 GPIO

of 7.5 K ± 1% to VCC (Figure 10).

1

Port B (6) D–

Data

R x D Port B (6)

Port B (7) D+

Clock

T x D Port B (7)

Vcc

7.5 K Pullup

Pull-up Resistor Enable

In/Wake

VUS B

Vcc

Pad

Figure 10. Port B (6–7) Serial Communication Port

DS97KEY2005

PRELIMINARY

17

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