668-0003-C Rabbit Semiconductor, 668-0003-C Datasheet - Page 106
668-0003-C
Manufacturer Part Number
668-0003-C
Description
IC CPU RABBIT2000 30MHZ 100PQFP
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-668-0003.pdf
(228 pages)
Specifications of 668-0003-C
Rohs Status
RoHS non-compliant
Processor Type
Rabbit 2000 8-Bit
Speed
30MHz
Voltage
2.7V, 3V, 3.3V, 5V
Mounting Type
Surface Mount
Package / Case
100-MQFP, 100-PQFP
Features
-
Other names
316-1004
668-0003
668-0003
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Part Number:
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Manufacturer:
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9.1 Parallel Port A
Parallel Port A has a single read/write register.
This register should not be used if the slave port is enabled.
The slave port control register is used to control whether Parallel Port A is an output or an
input. To make the port an input, store 0x080 in the SPCR (slave port control register). To
make the port an output, store 0x084 in SPCR. Parallel Port A is set up as an input port on
reset.
When the port is read, the value read reflects the voltages on the pins, "1" for high and "0"
for low. This could be different than the value stored in the output register if the pin is
forced to a different state by an external voltage.
100
Port A Data Register
Slave Port Control Register
PADR (R/W)
adr = 0x030
Register Name
Table 9-2. Parallel Port A Data Register Bit Functions
PA7
Bit 7
Table 9-1. Parallel Port A Registers
PA6
Bit 6
PA5
Bit 5
PADR
SPCR
Mnemonic
PA4
Bit 4
Rabbit 2000 Microprocessor User’s Manual
0x30
0x24
I/O address
PA3
Bit 3
PA2
Bit 2
R/W
R/W
R/W
PA1
Bit 1
xxxxxxxx
0xx00000
Reset
PA0
Bit 0
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