MSP53C391 and MSP53C392 Comparison
1-3
Introduction to the MSP53C391 and MSP53C392 Speech Synthesizers
1.3
MSP53C391 and MSP53C392 Comparison
The MSP53C391 is optimized to support a 4-bit wide data transfer protocol.
The MSP53C392 is optimized to support an 8-bit wide data transfer protocol.
The use of the 4-bit wide protocol in the MSP53C391 frees up some I/O pins
that can be used for other purposes. These pins (EOS and BUSY) can be used
to simplify the interface by minimizing the need to periodically poll the
MSP53C391 for its current status.
The use of the 8-bit wide protocol in the MSP53C392 provides a more efficient
data transfer.
A detailed comparison of the two devices is listed in Table 1–1.
Table 1–1. MSP53C391 and MSP53C392 Comparison
MSP53C391
MSP53C392
Number of Data Lines
4 bit
8 bit
Number of Control Lines
2 (Strobe & R/W)
2 (Strobe & R/W)
Data Request
Supported
N/A
Separate EOS Line for Detecting
End-of-Speech
Supported
N/A
Pin Expansion
Two expansion pins
N/A
Содержание MSP53C391
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