20-668-0024 Rabbit Semiconductor, 20-668-0024 Datasheet - Page 308

• 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

298
Bit(s)
Bit(s)
Bit(s)
Bit(s)
Bit(s)
6:0
6:0
6:0
6:0
6:0
7
7
7
7
7
Serial Port A User Enable Register
Serial Port B User Enable Register
Serial Port C User Enable Register
Serial Port D User Enable Register
Serial Port E User Enable Register
Value
Value
Value
Value
Value
0
1
0
1
0
1
0
1
0
1
Disable User Mode access to Serial Port A (I/O addresses 0x00C0–0x00C7).
Enable User Mode access to Serial Port A (I/O addresses 0x00C0–0x00C7).
These bits are reserved and should be written with zeros.
Disable User Mode access to Serial Port B (I/O addresses 0x00D0–0x00D7).
Enable User Mode access to Serial Port B (I/O addresses 0x00D0–0x00D7).
These bits are reserved and should be written with zeros.
Disable User Mode access to Serial Port C (I/O addresses 0x00E0–0x00E7).
Enable User Mode access to Serial Port C (I/O addresses 0x00E0–0x00E7).
These bits are reserved and should be written with zeros.
Disable User Mode access to Serial Port D (I/O addresses 0x00F0–0x00F7).
Enable User Mode access to Serial Port D (I/O addresses 0x00F0–0x00F7).
These bits are reserved and should be written with zeros.
Disable User Mode access to Serial Port E (I/O addresses 0x00C8–0x00CF).
Enable User Mode access to Serial Port E (I/O addresses 0x00C8–0x00CF).
These bits are reserved and should be written with zeros.
(SAUER)
(SBUER)
(SCUER)
(SDUER)
(SEUER)
Description
Description
Description
Description
Description
Rabbit 4000 Microprocessor User’s Manual
(Address = 0x03C0)
(Address = 0x03D0)
(Address = 0x03E0)
(Address = 0x03C8)
(Address = 0x03F0)