20-668-0011 Rabbit Semiconductor, 20-668-0011 Datasheet - Page 63

• 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 5 Memory Management
Bit(s)
Bit(s)
7:4
3:0
7
6
5
4
3
2
1
0
Write-Protect Segment x Register
Write-Protect High Register
Value
Value
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Disable 64K write-protect for relative address 0xF0000–0xFFFFF.
Enable 64K write-protect for relative address 0xF0000–0xFFFFF.
Disable 64K write-protect for relative address 0xE0000–0xEFFFF.
Enable 64K write-protect for relative address 0xE0000–0xEFFFF.
Disable 64K write-protect for relative address 0xD0000–0xDFFFF.
Enable 64K write-protect for relative address 0xD0000–0xDFFFF.
Disable 64K write-protect for relative address 0xC0000–0xCFFFF.
Enable 64K write-protect for relative address 0xC0000–0xCFFFF.
Disable 64K write-protect for relative address 0xB0000–0xBFFFF.
Enable 64K write-protect for relative address 0xB0000–0xBFFFF.
Disable 64K write-protect for relative address 0xA0000–0xAFFFF.
Enable 64K write-protect for relative address 0xA0000–0xAFFFF.
Disable 64K write-protect for relative address 0x90000–0x9FFFF.
Enable 64K write-protect for relative address 0x90000–0x9FFFF.
Disable 64K write-protect for relative address 0x80000–0x8FFFF.
Enable 64K write-protect for relative address 0x80000–0x8FFFF.
These bits are reserved and should be written with all zeros.
When these four bits match bits [19:16] of the physical address, write-protect
that 64K range in 4K increments using WPSxLR and WPSxHR.
(WPSAR)
(WPSBR)
(WPHR)
Description
Description
(Address = 0x0480)
(Address = 0x0484)
(Address = 0x0461)
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