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| 型号： | ISD4003-08MSI |
| 厂商： | WINBOND ELECTRONICS CORP |
| 元件分类： | 音频合成 |
| 英文描述： | 480 SEC, SPEECH SYNTHESIZER WITH RCDG, PDSO28 |
| 封装： | 0.1200 INCH, PLASTIC, SOIC-28 |
| 文件页数： | 21/37页 |
| 文件大小： | 392K |
| 代理商： | ISD4003-08MSI |
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28
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET]
8285E–AVR–02/2013
9.1.4
Asynchronous Timer Clock – clk
ASY
The Asynchronous Timer clock allows the Asynchronous Timer/Counter to be clocked directly from an external
clock or an external 32kHz clock XTAL. The dedicated clock domain allows using this Timer/Counter as a real-time
counter even when the device is in sleep mode.
9.1.5
ADC Clock – clk
ADC
The ADC is provided with a dedicated clock domain. This allows halting the CPU and I/O clocks in order to reduce
noise generated by digital circuitry. This gives more accurate ADC conversion results.
9.2
Clock Sources
The device has the following clock source options, selectable by Flash Fuse bits as shown below. The clock from
the selected source is input to the AVR clock generator, and routed to the appropriate modules.
Note:
1. For all fuses “1” means unprogrammed while “0” means programmed.
The various choices for each clocking option is given in the following sections. When the CPU wakes up from
Power-down or Power-save, the selected clock source is used to time the start-up, ensuring stable Oscillator oper-
ation before instruction execution starts. When the CPU starts from reset, there is an additional delay allowing the
power to reach a stable level before commencing normal operation. The Watchdog Oscillator is used for timing this
real-time part of the start-up time. The number of WDT Oscillator cycles used for each time-out is shown in Table 9-
2. The frequency of the Watchdog Oscillator is voltage dependent as shown in ”Typical characteristics – TA = -
Table 9-1.
Device clocking options select
(1).
Device clocking option
CKSEL3:0
External XTAL/Ceramic Resonator
1111 - 1000
External Low-frequency XTAL
0111 - 0110
Calibrated Internal RC Oscillator
0010
External Clock
0000
Reserved
0011, 0001, 0101, 0100
Table 9-2.
Number of Watchdog Oscillator cycles.
Typical time-out (V
CC = 5.0V)
Typical time-out (V
CC = 3.0V)
Number of cycles
4.1ms
4.3ms
4K (4,096)
65ms
69ms
64K (65,536)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISD4003-08MSIR | 功能描述:IC VOICE REC/PLAY 8MIN IN 28SOIC 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 |
| ISD4003-08MSY | 功能描述:IC VOICE REC/PLAY 8MIN 28-SOIC 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 |
| ISD4003-08MSYI | 功能描述:IC VOICE REC/PLAY 8MIN 28-SOIC 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 |
| ISD4003-08MX | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Single-Chip Voice Record/Playback Devices 4-, 5-, 6-, and 8-Minute Durations |
| ISD400308MXD | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Single-Chip Voice Record/Playback Devices 2- to 16-Minute Durations |
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