Pin Assignments and Description
1-5
Introduction to the MSP53C391 and MSP53C392 Speech Synthesizers
Figure 1–2. MSP53C392 Pin Assignments
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
DATA6/EOS
DATA5
DATA4
DATA3
DATA2
DATA1
R/W
OSC IN
DATA7/BUSY
STROB
DATA0
DAC+
DAC–
V
DD
V
SS
INIT
(TOP VIEW)
MSP53C392
N PACKAGE
Table 1–3. MSP53C392 Terminal Functions
PIN
I/O
DESCRIPTION
NAME
NO.
I/O
DESCRIPTION
DAC+
13
O
D/A output. This output pulses high for positive output values. It remains
low when negative values are output.
DAC–
12
O
D/A output. This output pulses high for negative output values. It remains
low when positive values are output.
DATA 0–7
14,6,5,4,
3,2,1,16
I/O
Data lines
INIT
9
I
Initialize input. When INIT goes low, the clock stops, the MSP53C392 goes
into low-power mode, the program counter is set to zero, and the contents of
the RAM are retained. An INIT pulse of 1
µ
s is sufficient to reset the processor.
OSC IN
8
I
This signal should be connected to Vss.
R/W
7
I
Read/write signal
STROB
15
I
Strobe signal for read/write
V
DD
11
–
5-V nominal supply voltage
V
SS
10
–
Ground pin
Summary of Contents for MSP53C391
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Page 62: ...C 1 Appendix A Listing of FMequM2 inc Topic Page C 1 Listing of FMequM2 inc C 2 Appendix C ...
Page 78: ...E 1 Appendix A Listing of FM2INTR1 inc Topic Page E 1 Listing of FM2INTR1 inc E 2 Appendix E ...
Page 99: ...MSP53C31 and MSP53C32 Data Sheet F 2 F 1 MSP53C31 and MSP53C32 Data Sheet ...