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| 型号： | ISD2340 |
| 厂商： | WINBOND ELECTRONICS CORP |
| 英文描述： | SINGLE-CHIP, MULTIPLE-MESSAGES, VOICE RECORD/PLAYBACK DEVICE 32-, 40-, 48-, AND 64-SECOND DURATION |
| 中文描述： | 单芯片，多消息，语音记录/播放设备32 - ，40 - ，48 - ，和64秒时间间隔 |
| 文件页数： | 13/42页 |
| 文件大小： | 1356K |
| 代理商： | ISD2340 |
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ISD2532/40/48/64
M6 – Push-Button Mode
The ISD2500 series contain a Push-Button Operational Mode. The Push-Button Mode is used
primarily in very low-cost applications and is designed to minimize external circuitry and components,
thereby reducing system cost. In order to configure the device in Push-Button Operational Mode, the
two most significant address bits must be HIGH, and the M6 mode pin must also be HIGH. A device in
this mode always powers down at the end of each playback or record cycle after
CE
goes HIGH.
When this operational mode is implemented, three of the pins on the device have alternate
functionality as described in the table below.
TABLE 3: ALTERNATE FUNCTIONALITY IN PINS
Pin Name
Alternate Functionality in Push-Button Mode
CE
Start/Pause Push-Button (LOW pulse-activated)
PD
Stop/Reset Push-Button (HIGH pulse-activated)
EOM
Active-HIGH Run Indicator
CE
(START/PAUSE)
In Push-Button Operational Mode,
CE
acts as a LOW-going pulse-activated START/PAUSE signal.
If no operation is currently in progress, a LOW-going pulse on this signal will initiate a playback or
record cycle according to the level on the P/
R
pin. A subsequent pulse on the
CE
pin, before an
EOM
is reached in playback or an overflow condition occurs, will pause the current operation, and
the address counter is not reset. Another
CE
pulse will cause the device to continue the operation
from the place where it is paused.
PD (STOP/RESET)
In Push-Button Operational Mode, PD acts as a HIGH-going pulse-activated STOP/RESET signal.
When a playback or record cycle is in progress and a HIGH-going pulse is observed on PD, the
current cycle is terminated and the address pointer is reset to address 0, the beginning of the
message space.
EOM
(RUN)
In Push-Button Operational Mode,
EOM
becomes an active-HIGH RUN signal which can be used to
drive an LED or other external device. It is HIGH whenever a record or playback operation is in
progress.
Recording in Push-Button Mode
1. The PD pin should be LOW, usually using a pull-down resistor.
Publication Release Date: June 2003
- 13 -
Revision 1.0
相关PDF资料 |
PDF描述 |
|---|---|
| ISD2540E | SINGLE-CHIP, MULTIPLE-MESSAGES, VOICE RECORD/PLAYBACK DEVICE 32-, 40-, 48-, AND 64-SECOND DURATION |
| ISD2540P | SINGLE-CHIP, MULTIPLE-MESSAGES, VOICE RECORD/PLAYBACK DEVICE 32-, 40-, 48-, AND 64-SECOND DURATION |
| ISD2540S | SINGLE-CHIP, MULTIPLE-MESSAGES, VOICE RECORD/PLAYBACK DEVICE 32-, 40-, 48-, AND 64-SECOND DURATION |
| ISD2540X | SINGLE-CHIP, MULTIPLE-MESSAGES, VOICE RECORD/PLAYBACK DEVICE 32-, 40-, 48-, AND 64-SECOND DURATION |
| ISD2548E | SINGLE-CHIP, MULTIPLE-MESSAGES, VOICE RECORD/PLAYBACK DEVICE 32-, 40-, 48-, AND 64-SECOND DURATION |
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