20-668-0011 Rabbit Semiconductor, 20-668-0011 Datasheet - Page 235

• Manufacturer Part Number: 20-668-0011
• Description: IC MPU RABIT3000A 55.5MHZ128LQFP
• Manufacturer: Rabbit Semiconductor

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

Chapter 26 System/User Mode
Bit(s)
Bit(s)
Bit(s)
Bit(s)
Bit(s)
6:0
6:0
6:0
6:0
6:0
7
7
7
7
Parallel Port G User Enable Register
7
Parallel Port C User Enable Register
Parallel Port D User Enable Register
Parallel Port E User Enable Register
Parallel Port F User Enable Register
Value
Value
Value
Value
Value
0
1
0
1
0
1
0
1
0
1
Disable User Mode access to Parallel Port C (I/O addresses 0x0050–0x0055).
Enable User Mode access to Parallel Port C (I/O addresses 0x0050–0x0055).
These bits are reserved and should be written with zeros.
Disable User Mode access to Parallel Port D (I/O addresses 0x0060–0x006F).
Enable User Mode access to Parallel Port D (I/O addresses 0x0060–0x006F).
These bits are reserved and should be written with zeros.
Disable User Mode access to Parallel Port E (I/O addresses 0x0070–0x007F).
Enable User Mode access to Parallel Port E (I/O addresses 0x0070–0x007F).
These bits are reserved and should be written with zeros.
Disable User Mode access to Parallel Port E (I/O addresses 0x0038–0x003F).
Enable User Mode access to Parallel Port E (I/O addresses 0x0038–0x003F).
These bits are reserved and should be written with zeros.
Disable User Mode access to Parallel Port E (I/O addresses 0x0048–0x004F).
Enable User Mode access to Parallel Port E (I/O addresses 0x0048–0x004F).
These bits are reserved and should be written with zeros.
(PCUER)
(PDUER)
(PGUER)
(PEUER)
(PFUER)
Description
Description
Description
Description
Description
(Address = 0x0350)
(Address = 0x0360)
(Address = 0x0370)
(Address = 0x0338)
(Address = 0x0348)
225