Z85C3008PSG Zilog, Z85C3008PSG Datasheet - Page 207

• Manufacturer Part Number: Z85C3008PSG
• Description: IC 8MHZ Z8500 CMOS SCC 40-DIP
• Manufacturer: Zilog
• Series: SCCr

Specifications of Z85C3008PSG

• Processor Type: Z80
• Features: Error Detection and Multiprotocol Support
• Speed: 8MHz
• Voltage: 5V
• Mounting Type: Through Hole
• Package / Case: 40-DIP (0.620", 15.75mm)
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: 0 C
• Mounting Style: Through Hole
• Cpu Speed: 8MHz
• Digital Ic Case Style: DIP
• No. Of Pins: 40
• Supply Voltage Range: 5V
• Operating Temperature Range: 0°C To +70°C
• Svhc: No SVHC (18-Jun-2010)
• Base Number: 85
• Rohs Compliant: Yes
• Clock Frequency: 8MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 269-3930; Q2456016A; Z85C3008PSG

Application Note
The Zilog Datacom Family with the 80186 CPU
SERIAL INTERFACING (Continued)
With jumpers installed to make DCD and CTS unbalanced,
J4 can also be used for an additional RS-232 serial link.
Connect a “Mac to Hayes modem” cable to J4, and
optionally a null modem interconnect module to the other
end. The cable internally grounds the RxD+ and TxD+
leads so that RxD– and TxD– act like RS-232 signals.
Macintosh
synchronous clock inputs. It is not known whether these
features are used by any applications, or attached
hardware. On all known Macs, the SCC’s TRxC pin is
driven from the same signal as CTS; to be compatible with
this feature, connect J15-J4 to pins 4 and 9 of the selected
connector among J5-J10.
6-72
systems
also
include
provisions
for
On the Mac SE, Mac II, and later models, a multiplexing
scheme is provided on SCC channel A’s RTxC pin to drive
from either the same signal as DCD, or from an on-board
3.672 MHz clock. (Channel B always had the 3.672 MHz
clock.) The former capability can be provided by
connecting J15-J6 to pins 6 and 8 of the selected
connector among J5-J10. The latter capability can be only
approximated using the 80186 clock with different baud
rate divisors, or by using another oscillator. (The board
includes an unpopulated 4-pin oscillator socket that might
be useful in this regard.)
UM010901-0601