- 您现在的位置：买卖IC网 > PDF目录176103 > ISD4003-05MED (WINBOND ELECTRONICS CORP) 300 SEC, SPEECH SYNTHESIZER WITH RCDG, PDSO28 PDF资料下载
参数资料
| 型号： | ISD4003-05MED |
| 厂商： | WINBOND ELECTRONICS CORP |
| 元件分类： | 音频合成 |
| 英文描述： | 300 SEC, SPEECH SYNTHESIZER WITH RCDG, PDSO28 |
| 封装： | 8 X 13.40 MM, PLASTIC, TSOP1-28 |
| 文件页数： | 14/37页 |
| 文件大小： | 392K |
| 代理商： | ISD4003-05MED |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页当前第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页
21
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET]
8285E–AVR–02/2013
The EEPROM can not be programmed during a CPU write to the Flash memory. The software must check that the
Flash programming is completed before initiating a new EEPROM write. Step 2 is only relevant if the software con-
tains a Boot Loader allowing the CPU to program the Flash. If the Flash is never being updated by the CPU, step 2
can be omitted. See ”Boot Loader Support – Read-While-Write Self-Programming” on page 241 for details about
Boot programming.
Caution: An interrupt between step 5 and step 6 will make the write cycle fail, since the EEPROM Master Write
Enable will time-out. If an interrupt routine accessing the EEPROM is interrupting another EEPROM access, the
EEAR or EEDR Register will be modified, causing the interrupted EEPROM access to fail. It is recommended to
have the Global Interrupt Flag cleared during all the steps to avoid these problems.
When the write access time has elapsed, the EEWE bit is cleared by hardware. The user software can poll this bit
and wait for a zero before writing the next byte. When EEWE has been set, the CPU is halted for two cycles before
the next instruction is executed.
The user should poll the EEWE bit before starting the read operation. If a write operation is in progress, it is neither
possible to read the EEPROM, nor to change the EEAR Register.
The calibrated Oscillator is used to time the EEPROM accesses. Table 8-1 lists the typical programming time for
EEPROM access from the CPU.
Note:
1. 3.3 applies to the Atmel ATmega165A/ATmega165PA.
The following code examples show one assembly and one C function for writing to the EEPROM. To avoid that
interrupts will occur during execution of these functions, the examples assume that interrupts are controlled (e.g.
by disabling interrupts globally). The examples also assume that no Flash Boot Loader is present in the software. If
such code is present, the EEPROM write function must also wait for any ongoing SPM command to finish.
Table 8-1.
EEPROM programming time.
Symbol
Number of calibrated
RC oscillator cycles
Typical programming time
EEPROM write (from CPU)
27 072
3.3/3.4ms (1)
相关PDF资料 |
PDF描述 |
|---|---|
| ISD4003-05MEI | 300 SEC, SPEECH SYNTHESIZER WITH RCDG, PDSO28 |
| ISD4003-05MSI | 300 SEC, SPEECH SYNTHESIZER WITH RCDG, PDSO28 |
| ISD4003-06MED | 360 SEC, SPEECH SYNTHESIZER WITH RCDG, PDSO28 |
| ISD4003-06MEI | 360 SEC, SPEECH SYNTHESIZER WITH RCDG, PDSO28 |
| ISD4003-06MSI | 360 SEC, SPEECH SYNTHESIZER WITH RCDG, PDSO28 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| ISD4003-05MEDR | 功能描述:IC VOICE REC/PLAY 5MIN EX 28TSOP RoHS:否 类别:集成电路 (IC) >> 接口 - 语音录制和重放 系列:ISD4003 标准包装:14 系列:- 接口:串行 滤波器通频带:1.7kHz 持续时间:8 ~ 32 秒 安装类型:通孔 封装/外壳:28-DIP（0.300"，7.62mm） 供应商设备封装:28-PDIP 其它名称:90-21300+000 |
| ISD4003-05MEI | 功能描述:IC VOICE REC/PLAY 5MIN IN 28TSOP RoHS:否 类别:集成电路 (IC) >> 接口 - 语音录制和重放 系列:ISD4003 标准包装:14 系列:- 接口:串行 滤波器通频带:1.7kHz 持续时间:8 ~ 32 秒 安装类型:通孔 封装/外壳:28-DIP（0.300"，7.62mm） 供应商设备封装:28-PDIP 其它名称:90-21300+000 |
| ISD4003-05MEIR | 功能描述:IC VOICE REC/PLAY 5MIN IN 28TSOP RoHS:否 类别:集成电路 (IC) >> 接口 - 语音录制和重放 系列:ISD4003 标准包装:14 系列:- 接口:串行 滤波器通频带:1.7kHz 持续时间:8 ~ 32 秒 安装类型:通孔 封装/外壳:28-DIP（0.300"，7.62mm） 供应商设备封装:28-PDIP 其它名称:90-21300+000 |
| ISD4003-05MEY | 功能描述:IC VOICE REC/PLAY 5MIN 28-TSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 语音录制和重放 系列:ISD4003 标准包装:14 系列:- 接口:串行 滤波器通频带:1.7kHz 持续时间:8 ~ 32 秒 安装类型:通孔 封装/外壳:28-DIP（0.300"，7.62mm） 供应商设备封装:28-PDIP 其它名称:90-21300+000 |
| ISD4003-05MEYI | 功能描述:IC VOICE REC/PLAY 5MIN 28-TSOP RoHS:是 类别:集成电路 (IC) >> 接口 - 语音录制和重放 系列:ISD4003 标准包装:14 系列:- 接口:串行 滤波器通频带:1.7kHz 持续时间:8 ~ 32 秒 安装类型:通孔 封装/外壳:28-DIP（0.300"，7.62mm） 供应商设备封装:28-PDIP 其它名称:90-21300+000 |
发布紧急采购，3分钟左右您将得到回复。