20-668-0003 Rabbit Semiconductor, 20-668-0003 Datasheet - Page 80
![IC CPU RABBIT2000 30MHZ 100PQFP](/photos/6/76/67658/316-100-pqfp_sml.jpg)
20-668-0003
Manufacturer Part Number
20-668-0003
Description
IC CPU RABBIT2000 30MHZ 100PQFP
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-668-0003.pdf
(228 pages)
Specifications of 20-668-0003
Processor Type
Rabbit 2000 8-Bit
Speed
30MHz
Voltage
2.7V, 3V, 3.3V, 5V
Mounting Type
Surface Mount
Package / Case
100-MQFP, 100-PQFP
Data Bus Width
8 bit
Maximum Clock Frequency
30 MHz
Operating Supply Voltage
0 V to 5.5 V
Maximum Operating Temperature
+ 85 C
Mounting Style
SMD/SMT
Minimum Operating Temperature
- 40 C
Number Of Programmable I/os
40
Number Of Timers
8 & 10 bit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
20-668-0003
316-1062
316-1062
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
20-668-0003
Manufacturer:
Rabbit Semiconductor
Quantity:
10 000
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7.3 Clock Doubler
The clock doubler is provided to allow a lower frequency crystal to be used for the main
oscillator and to provide an added range of clock frequency adjustability. The clock dou-
bler is controlled via the Global Clock Double Register as shown in Table 7-2.
Table 7-3 lists the recommended values or “settings” for the Global Clock Double Register
for various oscillator frequencies.
74
7:3
2:0
Bit(s)
Table 7-3. Recommended Delays Set In GCDR for Clock Doubler
Table 7-2. Global Clock Double Register (GCDR, adr = 0x0F)
xxxxx
000
001
010
011
100
101
110
111
Value
Recommended GCDR Value
These bits are ignored.
The clock double circuit is disabled.
10 ns nominal low time.
12 ns nominal low time.
14 ns nominal low time.
16 ns nominal low time.
18 ns nominal low time.
20 ns nominal low time.
8 ns nominal low time.
7
6
5
4
3
2
1
0
12.9024–14.7576 MHz
14.7576–16.5888 MHz
16.5888–20.2752 MHz
20.2752–23.9616 MHz
23.9616–31.3344 MHz
11.0592–12.9024 MHz
Description
Frequency Range
Rabbit 2000 Microprocessor User’s Manual
≤11.0592 MHz
>31.3344 MHz
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