20-668-0011 Rabbit Semiconductor, 20-668-0011 Datasheet - Page 203

• 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

The strobes can be enabled to come out on Parallel Port E.
By default the I/O strobes are configured as read-only chip selects with 15 wait states and
normal timing. These settings will affect the /IORD, /IOWR, and /BUFEN signals for
external I/O writes even if no other strobe outputs are enabled in the parallel port registers.
23.1.3 Block Diagram
23.1.4 Registers
Chapter 23 External I/O Control
I/O Bank 0 Control Register
I/O Bank 1 Control Register
I/O Bank 2 Control Register
I/O Bank 3 Control Register
I/O Bank 4 Control Register
I/O Bank 5 Control Register
I/O Bank 6 Control Register
I/O Bank 7 Control Register
Register Name
Mnemonic I/O Address R/W
IB0CR
IB1CR
IB2CR
IB3CR
IB4CR
IB5CR
IB6CR
IB7CR
0x0080
0x0081
0x0082
0x0083
0x0084
0x0085
0x0086
0x0087
W
W
W
W
W
W
W
W
000000xx
000000xx
000000xx
000000xx
000000xx
000000xx
000000xx
000000xx
Rabbit
Reset
3000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
00000000
Rabbit
3000A
Reset
193