isd14b00 Winbond Electronics Corp America, isd14b00 Datasheet - Page 8

• Manufacturer Part Number: isd14b00
• Description: Single-chip, Multiple-message Voice Record/playback Device 10.6- To 32-seconds Duration
• Manufacturer: Winbond Electronics Corp America

5. FUNCTIONAL DESCRIPTION
There are two operational modes: address trigger (
condition is selected on
5.1. A
The start address bits (
to access the memory location and they can divide the memory into a maximum of 16 slots. As
an example of I14B20, they are defined as follows:
5.1.1. Record (
• Low active input, level-hold for level-trigger or falling edge for edge-trigger with debounce required.
• For 8kHz sampling frequency, if
• For 6.4kHz sampling frequency, if
• Recording begins from the start address to end address and
• Recording ceases whenever
• Then the device will automatically power down.
• This pin has an internal pull-up device.
• Once
DDRESS
recording is activated. However, if
is initiated.
level recording is activated. However, if
recording is initiated.
pulse appears while in edge-trigger mode or when end address is reached. Then an EOM marker is
written at the end of message. And
illegal.
(
S3
E3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
REC
)
T
RIGGER
is active, input on
REC
(
S2
E2
NORM
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
) Operation
)
(
NORM
S0
/
,
MODE
( E1 )
S1
) O
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
S1
REC
,
PERATION
, the power must be cycled to enable it.
S2
REC
FT
REC
REC
LED
( E0 )
returns to High in level-hold mode or a subsequent lower going
,
S0
&
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
NORM MODE
is held at Low for a period equal to 1 sec or more, then level
S3
is pulsed Low for less than 1 sec, then edge-trigger recording
REC
is off.
is held at Low for a period equal to 1.25 sec or more, then
) and end address bits (
Row #
/
- 8 -
is pulsed Low for less than 1.25 sec, then edge-trigger
104
112
120
16
24
32
40
48
56
64
72
80
88
96
0
8
NORM
,
) and direct trigger (
S0
Duration [s]
Publication Release Date: October 9, 2007
,
14B20
10.00
11.25
12.50
13.75
15.00
16.25
17.50
18.75
1.25
2.50
3.75
5.00
6.25
7.50
8.75
LED
0
S1
,
is on.
S2
E0
,
S3
,
E1
,
E0
,
MODE
E2
,
ISD14B20
E1
&
). After a new
,
E3
E2
) are used
Revision 0
or
E3
is