ISD-T360SB Datasheet, PDF (13/109 Pages) List of Unclassifed Manufacturers – VoiceDSP Digital Speech Processor with Master/Slave, Full-Duplex Speakerphone, Multiple Flash and ARAM/DRAM Support

1—HARDWARE
ISD-T360SB
ing a power failure. If the power failure extends
the life of the battery, the microcontroller should
perform the initialization sequence (as described
on page 2-4), and use the SETD command to set
the date and time.
To keep power consumption low during power-
down mode, the RESET, MWCS, MWCLK and
MWDIN signals should be held above V_CC – 0.5 V
or below V_SS + 0.5 V.
1.2.4 POWER AND GROUNDING
Power Pin Connections
The ISD-T360 can operate over two supply volt-
age ranges 3.3 V ±10% and 5 V ±10%. The five
power supply pins (V_CC, V_SS, V_CCA, V_SSA and
V_CCHI) must be connected as shown in
Figure 1-5 when operating in a 3.3 V environ-
ment, and as shown in Figure 1-6 when operat-
ing in a 5 V environment. Failure to correctly
connect the pins may result in damage to the
device.
The Capacitor and Resistor values are given in
Table 1-3.
Table 1-3: Components of Supply Circuit
Component
Values
Tolerance
Resistor R1, R2
10 Ω
5%
Capacitors⁽¹⁾ C1, C2 1.0 µF
20%
Capacitors C3, C4, Tantalum
C5, C6, C7
0.1 µF Ceramic
1. All capacitors represent two parallel capacitors at
the values 1.0 µF and 0.1 µF.
Figure 1-5: 3.3 V Power Connection Diagram
3.3 V Supply
R₁
V_{SS VCC} V_CCV_CCA V_SS
C₁
V_SS
74
9
72
64
63
61
60
V_SSA
V_CCHI ₁₁
ISD-T360
50 ^VSS
V_{CC 12}
30
V_CC
32
V_SS
V_CC
48
ISD
1-5