S1V3S344A00A600 Epson, S1V3S344A00A600 Datasheet - Page 30

• Manufacturer Part Number: S1V3S344A00A600
• Description: Telecom Voice Conditioning ICs Voice Guidance IC FLASH
• Manufacturer: Epson

Specifications of S1V3S344A00A600

• Application: Voice Guidance
• Supply Voltage (max): 5 V
• Supply Voltage (min): 3.3 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Supply Current: 0.2 mA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

7. External Connection Examples
7.2 Serial Interface
7.2.1
When using a clock synchronous serial interface, set both input pins SHISEL0 and SHISEL1 to Low level.
SOS is active when NSCSS is Low level. SOS will be high impedance when NSCSS is High level. Multiple
slave devices can be connected through a general output port or host serial interface slave device selection signal
as shown in Figure 7.3. When controlling the NSCSS pin via a host general port, set to Low level immediately
before sending a message and to High level once a message is received.
MSGRDY is an output signal that indicates a command from the S1V3S344 is ready to be sent. This signal can
be used as an interrupt signal sent to the host to warn the host to reduce loads to prepare for message receipt. For
more information on MSGRDY output timing, refer to S1V3034x Series Message Protocol Specification.
STBYEXIT is an input signal to implement recovery from standby mode to normal operating mode. For more
information on STBYEXIT input timing, refer to S1V3034x Series Message Protocol Specification.
26
Figure 7.3 Example of serial interface external connection (clock synchronous)
Clock Synchronous
External Interrupt Port
Slave Device Select
Serial Data Out
Serial Clock Out
Host
Serial Data In
I/O Port or
I/O Port
EPSON
VSS
SCKS/SCL
SOS/TXD
SIS/RXD/SDA
NSCSS
MSGRDY
STBYEXIT
SHISEL0
SHISEL1
S1V3S344
S1V3S344 Hardware Specification
(Rev. 1.00)