20-668-0024 Rabbit Semiconductor, 20-668-0024 Datasheet - Page 238

• 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

228
Bit(s)
Bit(s)
7:6
5:4
3:2
1:0
7:0
Input Capture Source x Register
Input Capture LSB x Register
Value
Value
Write
Read
00
01
10
11
00
01
10
11
00
01
10
11
00
01
10
11
Parallel Port C used for Start condition input.
Parallel Port D used for Start condition input.
Parallel Port E used for Start condition input.
This bit combination is reserved and should not be used.
Use port bit 1 for Start condition input.
Use port bit 3 for Start condition input.
Use port bit 5 for Start condition input.
Use port bit 7 for Start condition input.
Parallel Port C used for Stop condition input.
Parallel Port D used for Stop condition input.
Parallel Port E used for Stop condition input.
This bit combination is reserved and should not be used.
Use port bit 1 for Stop condition input.
Use port bit 3 for Stop condition input.
Use port bit 5 for Stop condition input.
Use port bit 7 for Stop condition input.
The least significant eight bits of the latched Input Capture count are returned.
Reading the LSB of the count latches the MSB of the count to avoid reading stale
data. Reading the MSB of the count opens these latches on the MSB of the count.
In Counter operation, if no latching condition is specified the value written to this
register is returned.
The eight LSBs of the match value for counter mode are stored.
(ICS1R)
(ICS2R)
(ICL1R)
(ICL2R)
Description
Description
Rabbit 4000 Microprocessor User’s Manual
(Address = 0x005D)
(Address = 0x005A)
(Address = 0x005E)
(Address = 0x0059)