ISD1112SR Nuvoton Technology Corporation of America, ISD1112SR Datasheet - Page 6

• Manufacturer Part Number: ISD1112SR
• Description: IC VOICE REC/PLAY 12-SEC 28-SOIC
• Manufacturer: Nuvoton Technology Corporation of America
• Series: ISD1100r

Specifications of ISD1112SR

• Interface: Pushbutton
• Filter Pass Band: 2.2kHz
• Duration: 12 Sec
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (0.300", 7.50mm Width)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

6. PIN DESCRIPTION
PIN NAME
V
V
SP+, SP-
CCA
SSA
A0-A7
MIC
, V
, V
SSD
CCD
1-6, 9, 10
PIN NO.
12, 13
14, 15
16, 28
17
Address Inputs: The address inputs have two functions,
depending on the level of the two Most Significant Bits (MSB)
of the address (A6 and A7).
If either or both of the two MSBs are LOW, all inputs are
interpreted as address bits and are used as the start address
for the current record or playback cycle. The address pins are
inputs only and do not output internal address information as
the operation progresses. Address inputs are latched by the
falling edge of PLAYE , PLAYL , or REC .
If both A6 & A7 are HIGH, then the device is in a special
operational mode for looping. Please refer to looping
capability section for details.
A0, A1, A2, A3, A4 and A5 have internal pull-down resistors,
while A6 and A7 have internal pull-up resistors. They can be
floating if not used. Each of these internal pull-up or pull-down
devices have a value of 50 K Ω to 100 K Ω.
Ground: Similar to V
ground rails provide independent analog and digital ground
buses internally to minimize noise. These pins should be tied
together as close as possible to the device.
Speaker Outputs: The differential SP+ and SP- pins are
designed to drive a 16Ω speaker directly. Conversely, with
single-ended connection, a coupling capacitor is needed
between the SP pin and the speaker. Besides, the output
power is about a quarter of that from differential output. The
speaker outputs are in high-impedance state during recording
and at V
Supply Voltages: Separate analog and digital powers provide
power to internal analog and digital circuits respectively to
minimize internal noises. These power buses are brought out
to separate pads and should be tied together as close to the
supply source as possible. It is important that the power
supplies are decoupled as close to the device as possible.
Microphone: The microphone input transfers its signal to the
on-chip preamplifier. An on-chip Automatic Gain Control
(AGC) circuit controls the gain of this preamplifier from –15 to
24dB. An external microphone should be AC coupled to this
pin via a series capacitor. The capacitor value, together with
the internal 10 KΩ resistance on this pin, determines the low-
frequency cutoff for the device passband. See Winbond’s
Application Information for additional information on low-
frequency cutoff calculation.
SSA
- 6 -
during power down.
CCA
and V
FUNCTION
CCD
ISD1100 SERIES
, separate analog and digital