20-668-0011 Rabbit Semiconductor, 20-668-0011 Datasheet - Page 113
20-668-0011
Manufacturer Part Number
20-668-0011
Description
IC MPU RABIT3000A 55.5MHZ128LQFP
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-668-0011.pdf
(312 pages)
Specifications of 20-668-0011
Processor Type
Rabbit 3000 8-Bit
Speed
55.5MHz
Voltage
2.5V, 2.7V, 3V, 3.3V
Mounting Type
Surface Mount
Package / Case
128-LQFP
Data Bus Width
8 bit
Maximum Clock Frequency
55.5 MHz
Operating Supply Voltage
1.8 V to 3.6 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 55 C
Number Of Programmable I/os
56
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
316-1061
Available stocks
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Manufacturer
Quantity
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Part Number:
20-668-0011
Manufacturer:
Rabbit Semiconductor
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10 000
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14.2.3 Interrupts
There are no interrupts associated with Parallel Port G.
14.3 Operation
The following steps must be taken before using Parallel Port G.
1. Select the desired input/output direction for each pin via PGDDR.
2. Use PGCR to select the clock.
3. If an alternative function is desired for a pin, select it via PGFR.
Once the port is set up, data can be read or written by accessing PGDR. The value of an
output pin read in from PGDR will reflect its current output value, but any value written to
an input pin will not appear until that pin becomes an output.
On reset, PGDDR is zeroed, making all pins inputs, and disabling the alternate output
functions. In addition, bits 0, 1, 4, and 5 in PGCR are zeroed to ensure that data are
clocked into the output registers when loaded. All other registers associated with Parallel
Port G are not initialized on reset.
Chapter 14 Parallel Port G
103
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