ISD2500 Datasheet, PDF (4/28 Pages) List of Unclassifed Manufacturers – Single-Chip Voice Record/Playback Devices 32-, 40-, 48-, 64-,60-,75,90-, and 120-Second Durations

ISD2500 Series
ISD2560/75/90/120 DEVICE PINOUTS
OVF ¹
CE
2
PD
3
EOM ⁴
XCLK ⁵
P/R ⁶
VCCD
7
NC
8
NC
9
A0/M0 ¹⁰
A1/M1 ¹¹
A2/M2 ¹²
A3/M3 ¹³
A4/M4 ¹⁴
A5/M5 ¹⁵
A6/M6 ¹⁶
ISD2560/75/90/120
TSOP
Product Data Sheets
A0/M0 1
A1/M1 2
28 V_CCD
27 P/R
32
ANA OUT
A2/M2 3
26 XCLK
31
ANA IN
A3/M3 4
25 EOM
30
AGC
29
MIC REF
A4/M4 5
24 PD
28
MIC
27
VCCA
26
SP–
A5/M5
A6/M6
6 _ISD2560 23
7 _ISD2575 22
CE
OVF
25
NC
24
NC
23
SP+
A7 8 _ISD2590 21 ANA OUT
A8 9 _ISD25120 20 ANA IN
22
VSSA
A9 10
19 AGC
21
VSSD
20
AUX IN
AUX IN 11
18 MIC REF
19
A9
VSSD
12
17 MIC
18
A8
17
A7
VSSA
13
16 V_CCA
SP+ 14
15 SP–
DIP/SOIC
Mode described later in the Operational Mode
section.
-1 _{Chip Enable Input (CE)}
The CE pin is taken LOW to enable all Playback
and Record operations. The address inputs and
Playback/Record input (P/R) are latched by the
falling edge of CE. CE has additional functionality
in the M6 (Push-Button) Operational Mode
described later in the Operational Mode section.
Playback/Record Input (P/R)
The P/R input is latched by the falling edge of the
CE pin. A HIGH level selects a Playback cycle
while a LOW level selects a Record cycle. For a
Record cycle, the address inputs provide the start-
ing address and recording continues until PD or
CE is pulled HIGH or an overflow is detected (i.e.
the chip is full). When a Record cycle is terminated
by pulling PD or CE HIGH, an End-Of-Message
(EOM) marker is stored at the current address in
memory. For a Playback cycle, the address inputs
provide the starting address and the device will
play until an EOM marker is encountered. The
device can continue past an EOM marker in an
operational mode, or if CE is held LOW in address
mode. (See page 1-85 for more Operational
Modes).
End-Of-Message / RUN Output (EOM)
A nonvolatile marker is automatically inserted at
the end of each recorded message. It remains
there until the message is recorded over. The
EOM output pulses LOW for a period of T_EOM at
the end of each message.
In addition, the ISD2500 Series has an internal
V_CC detect circuit to maintain message integrity
should V_CC fall below 3.5V. In this case, EOM
goes LOW and the device is fixed in Playback-only
mode.
When the device is configured in Operational
Mode M6 (Push-Button Mode), this pin provides an
active-HIGH RUN signal, indicating the device is
currently recording or playing. This signal can con-
veniently drive an LED for a visual indicator of a
Record or Playback operation in process.
Overflow Output (OVF)
This signal pulses LOW at the end of memory
space, indicating the device has been filled and the
message has overflowed. The OVF output then fol-
lows the CE input until a PD pulse has reset the
device. This pin can be used to cascade several
ISD2500 devices together to increase Record/
Playback durations.
1–82
* ^{Advance information: ISD2532/40/48/64 devices.}