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Z86U18 Datasheet(Fiches technique) 2 Page - Zilog, Inc.

Numéro de pièce Z86U18
Description  USB Device Controller with CMOS Z86K15 MCU
Télécharger  30 Pages
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Fabricant  ZILOG [Zilog, Inc.]
Site Internet  http://www.zilog.com
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 2 page
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Z86U18
USB Device Controller with CMOS Z86K15 MCU
Zilog
2
P R E L I M I N A R Y
DS97KEY0102
GENERAL DESCRIPTION (Continued)
Power connections follow conventional descriptions be-
low:
This device is based on the Z86K15 device with the follow-
ing changes or modifications:
1.
Power-On Reset (POR): POR timing is a function of
the system clock.
POR = (32 * 216)/f = .098
POR is in seconds and frequency in Hz. It may need
a programmable timer for warm reset (USB reset).
2.
Watch-Dog Timer (WDT): WDT is also driven by the
system clock and subject to same tolerance.
The
WDT can be programmed for time out value of:
WDT = POR/2
3.
EMI, 801-2 and 801-4 Compliance: When used with
good engineering practice, this device should meet
Class B FCC with at least 10 dB of margin and comply
with the 801-2 group 4 air discharge. It shall meet 801-
4 EFT requirements in a system.
4.
XTAL: Drive to 3-pin ceramic resonator (@ 6 MHz).
5.
XTAL In: From ceramic resonator or crystal.
Connection
Circuit
Device
Power
VCC
VDD
Ground
GND
VSS
Figure 1. Z86U18 Functional Block Diagram
Port 3
Interrupt
Control
Port 2
I/O
(Bit Programmable)
ALU
Flags
Register
Pointer
Machine
Timing & Inst.
Control
Program
Counter
GND
Output
Input
Port 0
Port 1
Open-Drain
Output
Open-Drain
Output
WDT
POR
Input
4
4
4
8
8
Counter/
Timers
USB SIE
and Trans
Register File
208 x 8-Bytes
Program
Memory
4 KB ROM
VCC
D+
D-
3.3 V
VR
VCC
VUSB




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