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iSBC 432/100
General Information
Table 1-1. iSBC 432/100™ Specifications (Cont'd.)
Interval Timer and Baud Rate Generator
Output Frequencies:
1/0 Addressing
Interface Compatibility
Serial 1/0:
Interrupts:
Compatible Connectors/Cables:
Environmental Requirements:
Relative Humidity:
Physical Characteristics
Width:
Height:
Thickness:
Weight:
Power Requirements
+ 5V
5% at 4.5 A
+12V
5% at 40 mA
-12V
5% at 40 mA
Notes.
1. Frequency selected by 1/0 writes of appropriate 16-bit fre-
quency factor into 8253 PIT registers.
2. Baud rates shown here are only a sample subset of possible
software programmable rates available. Any frequency from
37.5 to 614.4 kHz may be generated utilizing the on-board
crystal oscillator and 16-bit PIT.
1.228 MHz± 0.1% (.82 micmsecond nominai period).
Rate Generator: 37.5 Hz to 614.4 kHz
Process Clock: 3.25 microseconds to 58.25 minutes. (cascaded
timers)
On-board 1/0 devices recognize an 8-bit 1/0 address. iSBC 432/100
local accesses are translated to Multibus 1/0 accesses.
EIA standard RS-232-C signals provided and supported:
Clear to Send
Request to Send
Data Set Ready
Transmitted Data
Received Data
Data Terminal Ready
The 432 CPU can generate a single interrupt on the Multibus
INT5/, INT6/, or INT7/ lines.
Refer to Table 2-1 for compatible connector details. Refer to
paragraph 2-15 for recommended types and lengths of 1/0 cables.
0° to 50° C (32° to 122° F)
To 90% without condensation.
30.48 cm (12.00 inches)
17.15 cm (6.75 inches)
1.52 cm (0.6 inches)
453.6 gm (16 ounces)
1-3
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