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参数资料
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： 34/37页
文件大小： 392K
代理商： ISD4003-08MSI
6
ATmega165A/PA/325A/PA/3250A/PA/645A/P/6450A/P [DATASHEET]
8285E–AVR–02/2013
2.2
Comparison between Atmel
ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P
2.3
Pin descriptions
2.3.1
VCC
Digital supply voltage.
2.3.2
GND
Ground.
2.3.3
Port A (PA7:PA0)
Port A is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port A output buf-
fers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port A pins that are
externally pulled low will source current if the pull-up resistors are activated. The Port A pins are tri-stated when a
reset condition becomes active, even if the clock is not running.
Port A also serves the functions of various special features of the
ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P as listed on ”Alternate functions of
Port B” on page 68.
2.3.4
Port B (PB7:PB0)
Port B is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port B output buf-
fers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port B pins that are
externally pulled low will source current if the pull-up resistors are activated. The Port B pins are tri-stated when a
reset condition becomes active, even if the clock is not running.
Port B has better driving capabilities than the other ports.
Port B also serves the functions of various special features of the
ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P as listed on ”Alternate functions of
Port B” on page 68.
2.3.5
Port C (PC7:PC0)
Port C is an 8-bit bi-directional I/O port with internal pull-up resistors (selected for each bit). The Port C output buf-
fers have symmetrical drive characteristics with both high sink and source capability. As inputs, Port C pins that are
Table 2-1.
Differences between: ATmega165A/165PA/325A/325PA/3250A/3250PA/645A/645P/6450A/6450P.
Device
Flash
EEPROM
RAM
MHz
ATmega165A
16Kbyte
512Bytes
1Kbyte
16
ATmega165PA
16Kbyte
512Bytes
1Kbyte
16
ATmega325A
32Kbyte
1Kbyte
2Kbyte
20
ATmega325PA
32Kbyte
1Kbyte
2Kbyte
20
ATmega3250A
32Kbytes
1Kbyte
2Kbyte
20
ATmega3250PA
32Kbyte
1Kbyte
2Kbyte
20
ATmega645A
64Kbyte
2Kbyte
4Kbyte
16
ATmega645P
64Kbyte
2Kbyte
4Kbyte
16
ATmega6450A
64Kbyte
2Kbyte
4Kbyte
20
ATmega6450P
64Kbyte
2Kbyte
4Kbyte
20
相关PDF资料
PDF描述
ISD4003-04MZD 240 SEC, SPEECH SYNTHESIZER WITH RCDG, PBGA19
ISD4003-04MZI 240 SEC, SPEECH SYNTHESIZER WITH RCDG, PBGA19
ISD4003-05MZD 300 SEC, SPEECH SYNTHESIZER WITH RCDG, PBGA19
ISD4003-05MZI 300 SEC, SPEECH SYNTHESIZER WITH RCDG, PBGA19
ISD4003-06MZD 360 SEC, SPEECH SYNTHESIZER WITH RCDG, PBGA19
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