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參數(shù)資料
| 型號： | ISD1740A |
| 廠商： | WINBOND ELECTRONICS CORP |
| 英文描述： | RES 2K00 SM 1/8W F 0805C THKF 100PPM TR |
| 中文描述： | 多信息單芯片語音記錄 |
| 文件頁數(shù)： | 13/31頁 |
| 文件大小： | 360K |
| 代理商： | ISD1740A |
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ISD1700A SERIES
Confidential
Publication Release Date: March 28, 2005
- 13 -
Revision A0
7 PUSH-BUTTON OPERATIONS
The user utilizes the
REC
,
PLAY
,
FT
,
FWD
,
ERASE
,
VOL
or
RESET
pin to initiate an operation.
The device automatically enters the power-down state at the end of a PLAY, REC, ERASE, FWD,
VOL, or RESET operation.
7.1 O
PERATION
O
VERVIEW
After power-on-reset (POR), the device is in the factory default state and two internal record and
playback pointers are initialized. (Detailed information about these two pointers is provided later in
this Section.) Then, the active analog path configuration is determined by the state of the
FT
, and
by the operation requested (e.g. record, playback, or power down).
Up to four optional sound effects (SE1-4) can be programmed into the device to provide audible
feedback to alert the user about the operating status. Separately, the LED output provides visual
feedback on the operating state even if no sound effects are programmed.
A circular message management technique is implemented. Recorded messages are stored
sequentially into the memory from the beginning to the end in a circular manner.
Two internal pointers, the record pointer and playback pointer, determine the point at which an
operation starts. After power-on or
RESET
, these pointers are initialized as follows:
If no messages are present, both point to the beginning.
If messages are present, the record pointer points to the next available memory location after
the last message and the playback pointer points to the beginning of the last recorded
message.
The playback pointer is affected primarily by the
FWD
operation. The record pointer is updated to
the next available memory location after each
REC
operation.
7.1.1
Record Operation
Recording is controlled by the
REC
. Setting this pin Low starts a record operation. The
device will start recording from the next available location in memory and will continue
recording until either the
REC
is returned High or the memory becomes full. The source of
the recording is from either MIC or AnaIn, whereas the active analog configuration path is
determined by the desired operation and the state of the
FT
. The
REC
is debounced
internally. After recording, the record pointer will move from the last recorded message to the
next available address and the playback pointer will be positioned at the beginning of the
newly recorded message.
It is important for an Erase operation to be performed on the desired location before any
recording proceeds. Also, the power supply must remain On during the entire process of
recording. If power is interrupted during recording, the LED will blink seven times, which
indicates that something unusual has occurred. In this event, performing a Global Erase will
reset the chip back to its proper state.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ISD1760A | Multi-Message Single-Chip Voice Record&Playback Devices |
| ISD1800 | SINGLE-CHIP, SINGLE-MESSAGE VOICE RECORD/PLAYBACK DEVICE 6- TO 16-SECOND DURATION |
| ISD1810 | Single-Chip, Single-Message Voice Record/Playback Device 8- to 16-Second Durations(單片聲音錄音/回放芯片(單片信息存儲持續(xù)時間8到16秒鐘)) |
| ISD2120 | Single-Chip Voice Record/Playback Devices 60-, 75-, 90-, and 120-Second Durations |
| ISD25120G | Single-Chip Voice Record/Playback Devices 60-, 75-, 90-, and 120-Second Durations |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ISD1740EY | 功能描述:IC VOICE REC/PLAY 40-SEC 28-TSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 語音錄制和重放 系列:ISD1700, ChipCorder® 標準包裝:14 系列:- 接口:串行 濾波器通頻帶:1.7kHz 持續(xù)時間:8 ~ 32 秒 安裝類型:通孔 封裝/外殼:28-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:28-PDIP 其它名稱:90-21300+000 |
| ISD1740EY01 | 功能描述:IC VOICE REC/PLAY 40-SEC 28-TSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 語音錄制和重放 系列:ISD1700, ChipCorder® 標準包裝:14 系列:- 接口:串行 濾波器通頻帶:1.7kHz 持續(xù)時間:8 ~ 32 秒 安裝類型:通孔 封裝/外殼:28-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:28-PDIP 其它名稱:90-21300+000 |
| ISD1740EYI | 功能描述:IC VOICE REC/PLAY 40-SEC 28-TSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 語音錄制和重放 系列:ISD1700, ChipCorder® 標準包裝:14 系列:- 接口:串行 濾波器通頻帶:1.7kHz 持續(xù)時間:8 ~ 32 秒 安裝類型:通孔 封裝/外殼:28-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:28-PDIP 其它名稱:90-21300+000 |
| ISD1740EYI01 | 功能描述:IC VOICE REC/PLAY 40-SEC 28-TSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 語音錄制和重放 系列:ISD1700, ChipCorder® 標準包裝:14 系列:- 接口:串行 濾波器通頻帶:1.7kHz 持續(xù)時間:8 ~ 32 秒 安裝類型:通孔 封裝/外殼:28-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:28-PDIP 其它名稱:90-21300+000 |
| ISD1740EYIR | 功能描述:IC VOICE REC/PLAY 40SEC 28-TSOP RoHS:是 類別:集成電路 (IC) >> 接口 - 語音錄制和重放 系列:ISD1700, ChipCorder® 標準包裝:14 系列:- 接口:串行 濾波器通頻帶:1.7kHz 持續(xù)時間:8 ~ 32 秒 安裝類型:通孔 封裝/外殼:28-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:28-PDIP 其它名稱:90-21300+000 |
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