isp1181 NXP Semiconductors, isp1181 Datasheet - Page 64

• Manufacturer Part Number: isp1181
• Description: Isp1181 Full-speed Universal Serial Bus Interface Device
• Manufacturer: NXP Semiconductors

Philips Semiconductors
21. Test information
9397 750 08938
Product data
20.2.4 Using H8S2357 I/O Ports
In the interface circuit of
general purpose output port. This pin drives the ISP1181’s WAKEUP input to
generate a remote wake-up.
The H8S/2357 has 3 registers to configure port 1: Port 1 Data Direction Register
(P1DDR), Port 1 Data Register (P1DR) and Port 1 Register (PORT1). Only registers
P1DDR and P1DR must be configured, register PORT1 is only used to read the
actual levels on the port pins.
The dynamic characteristics of the analog I/O ports (D and D
were determined using the circuit shown in
•
Fig 34. Load impedance for D and D pins.
H8S/2357:
– select pin P1.1 to be an output in register P1DDR
– program the desired bit value for P1.1 in register P1DR.
Load capacitance:
Speed:
C
full-speed mode only: internal 1.5 k pull-up resistor on D
L
= 50 pF (full-speed mode)
Rev. 04 — 30 October 2001
Figure 32
D.U.T
pin P1.1 of the H8S/2357 is configured as a
22
test point
Figure
15 k
34.
© Koninklijke Philips Electronics N.V. 2001. All rights reserved.
C L
50 pF
MGS784
Full-speed USB interface
as listed in
ISP1181
Table
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