668-0003-C Rabbit Semiconductor, 668-0003-C Datasheet - Page 134
![no-image](/images/no-image-200.jpg)
668-0003-C
Manufacturer Part Number
668-0003-C
Description
IC CPU RABBIT2000 30MHZ 100PQFP
Manufacturer
Rabbit Semiconductor
Datasheet
1.20-668-0003.pdf
(228 pages)
Specifications of 668-0003-C
Rohs Status
RoHS non-compliant
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
Features
-
Other names
316-1004
668-0003
668-0003
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
668-0003-C
Manufacturer:
Rabbit Semiconductor
Quantity:
10 000
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12.6 Clocked Serial Timing
12.6.1 Clocked Serial Timing With Internal Clock
For synchronous serial communication, the serial clock can be either generated by the
Rabbit or by an external device. The timing diagram in Figure 12-5 below can be applied
to both full-duplex and half-duplex clocked serial communication where the serial clock is
generated internally by the Rabbit. With an internal clock, the maximum serial clock rate
is
12.6.2 Clocked Serial Timing with External Clock
In a system where the Rabbit serial clock is generated by an external device, the clock sig-
nal has to be synchronized with the internal peripheral clock (
transmitted or received by the Rabbit. Depending on when the external serial clock is gen-
erated, in relation to
nal clock to be synchronized with the internal clock before any data can be transferred.
Figure 12-6 shows the timing relationship among
data transmit.
128
Rx Capture Strobe
perclk
CLKA
(ext.)
TxA
perclk
CYCLE
CLKA
RxA
TxA
Figure 12-5. Full-Duplex Clocked Serial Timing Diagram with Internal Clock
Figure 12-6. Synchronous Serial Data Transmit Timing with External Clock
/4.
LSB
perclk
LSB
1
BIT 1
BIT 1
, it may take anywhere from 2 to 3 clock cycles for the exter-
2
BIT 2
BIT 2
3
BIT 3
BIT 3
4
perclk
Rabbit 2000 Microprocessor User’s Manual
BIT 4
BIT 4
5
, the external serial clock, and
BIT 5
BIT 5
perclk
6
BIT 6
BIT 6
) before data can be
7
MSB
8
MSB
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