20-668-0011 Rabbit Semiconductor, 20-668-0011 Datasheet - Page 75
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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Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
20-668-0011
Manufacturer:
Rabbit Semiconductor
Quantity:
10 000
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8.1 Overview
Parallel Port A is a byte-wide port that can be used as an input or an output port. Parallel
Port A is also used as the data bus for the slave port and external I/O bus. The Slave Port
Control Register (SPCR) is used to configure how Parallel Port A is used. Parallel Port A
is an input at startup or reset. If the SMODE pins have selected the slave port bootstrap
mode, Parallel Port A will be the slave port data bus until disabled by the processor. Parallel
Port A can also be used as an external I/O data bus to isolate external I/O from the main
data bus.
8.1.1 Block Diagram
8.1.2 Registers
Chapter 8 Parallel Port A
Port A Data Register
Register Name
Table 8-1. Parallel Port A Pin Alternate Output Functions
Pin Name
PA[7:0]
Slave Port
Data Bus
SD[7:0]
Mnemonic
8. P
PADR
ARALLEL
External I/O
I/O Address
ID[7:0]
Bus
0x0030
R/W
R/W
P
ORT
xxxxxxxx
Reset
A
65
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