20-668-0024 Rabbit Semiconductor, 20-668-0024 Datasheet - Page 100

• Manufacturer Part Number: 20-668-0024
• Description: IC CPU RABBIT4000 128-LQFP
• Manufacturer: Rabbit Semiconductor

Specifications of 20-668-0024

• Processor Type: Rabbit 4000 8-bit
• Speed: 60MHz
• Voltage: 2.5V, 2.7V, 3V, 3.3V
• Mounting Type: Surface Mount
• Package / Case: 128-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Other names: 20-668-0022; 316-1078

11.1.2 Registers
11.2 Dependencies
11.2.1 I/O Pins
Parallel Port D uses pins PD0 through PD7. These pins can be used individually as data
inputs or outputs; as serial port transmit and receive for Serial Ports A, B, E, and F; as clocks
for Serial Ports C–F; as external I/O strobes; or as outputs for the PWM and Timer C
peripherals. In addition, Parallel Port D acts as the upper byte of the data bus (D[15:8])
when 16-bit addressing is enabled. The input capture peripheral can also watch pins PD7,
PD5, PD3, and PD1.
All pins are set as inputs on startup.
The individual bits can be set to be open-drain via PDDCR.
See the associated peripheral chapters for details on how they use Parallel Port D.
11.2.2 Clocks
All outputs on Parallel Port D are clocked by the peripheral clock unless changed in PDCR,
where the option of updating the Parallel Port D pins can be synchronized to the output of
Timer A1, Timer B1, or Timer B2.
90
Port D Data Register
Port D Alternate Low Register
Port D Alternate High Register
Port D Control Register
Port D Function Register
Port D Drive Control Register
Port D Data Direction Register
Port D Bit 0 Register
Port D Bit 1 Register
Port D Bit 2 Register
Port D Bit 3 Register
Port D Bit 4 Register
Port D Bit 5 Register
Port D Bit 6 Register
Port D Bit 7 Register
Register Name
Mnemonic
PDAHR
PDDDR
PDALR
PDDCR
PDB0R
PDB1R
PDB2R
PDB3R
PDB4R
PDB5R
PDB6R
PDB7R
PDDR
PDCR
PDFR
Rabbit 4000 Microprocessor User’s Manual
I/O Address
0x006A
0x006B
0x006C
0x006D
0x006E
0x006F
0x0060
0x0062
0x0063
0x0064
0x0065
0x0066
0x0067
0x0068
0x0069
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
W
W
W
W
W
W
W
W
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00000000
Reset