Nkọwa
PCA9554 na PCA9554A bụ ngwaọrụ CMOS 16-pin nke na-enye 8 ibe n'ibe nke mkpokọta Nzube myirịta Ntinye/mmepụta (GPIO) maka ngwa I2C-bus/SMBus wee mepụta iji kwalite ezinụlọ NXP Semiconductors ezinụlọ nke I2C-bus I/O expanders.Nkwalite ndị a gụnyere ikike ịnya ụgbọ ala dị elu, nnabata 5 VI/O, obere ọkọnọ dị ugbu a, nhazi I/O nke onye ọ bụla, ugboro elekere 400 kHz, yana nkwakọ obere.Ndị na-agbasawanye I / O na-enye ngwọta dị mfe mgbe achọrọ I / O ọzọ maka ọkụ ọkụ ACPI, ihe mmetụta, bọtịnụ ntinye, LEDs, Fans, na ndị ọzọ.PCA9554/PCA9554A nwere ndekọ nhazi 8-bit (Nhọrọ ntinye ma ọ bụ mmepụta);Ndebanye aha Port Input 8-bit, ndebanye aha Port Output 8-bit yana ndekọ inversion 8-bit Polarity (HIGH na-arụ ọrụ ma ọ bụ ọrụ LOW na-arụ ọrụ).Onye nwe sistemu nwere ike mee ka I/Os dị ka ntinye ma ọ bụ ntinye site na idegara ibe nhazi I/O.A na-edobe data maka ntinye ma ọ bụ mmepụta ọ bụla na ndebanye aha Port Port ma ọ bụ mmepụta kwekọrọ.Enwere ike ịtụgharị polarity nke ndebanye aha na-agụ site na ndebanye aha ntụgharị Polarity.Enwere ike ịgụ akwụkwọ ndekọ aha niile site n'aka onye isi sistemụ.Ọ bụ ezie na pin-to-pin na adreesị ụgbọ ala I2C-dakọtara na usoro PCF8574, a chọrọ mgbanwe ngwanrọ n'ihi nkwalite ndị a na-atụle ya na Ngwa Note AN469.PCA9554/PCA9554A mmeghe nkwụsị nkwụsịtụ na-arụ ọrụ mgbe steeti ntinye ọ bụla dị iche na ndebanye aha Port Port ya kwekọrọ na ejiri gosi onye isi sistemụ na ọnọdụ ntinye agbanweela.Ntọgharị ike na-edobe ndekọ na ụkpụrụ ndabara ha wee malite igwe steeti ngwaọrụ.Atọ ngwaike atụdo (A0, A1, A2) ịdị iche iche na ofu I2C-ụgbọ ala adreesị na-ekwe ka ihe asatọ ngwaọrụ ịkọrọ otu I2C-bọs/SBus.PCA9554A dị na PCA9554 ma e wezụga na adreesị ụgbọ ala I2C a kapịrị ọnụ dị iche na-enye ohere ruo iri na isii n'ime ngwaọrụ ndị a (asato nke ọ bụla) n'otu I2C-bus/SMBus.
Nkọwapụta: | |
Njirimara | Uru |
Otu | Sekit jikọtara ọnụ (ICs) |
Interface - I/O Expanders | |
Mfr | NXP USA, Inc. |
Usoro | - |
ngwugwu | teepu & Reel (TR) |
Mpempe akwụkwọ (CT) | |
Digi-Reel® | |
Ọnọdụ akụkụ | Na-arụ ọrụ |
Ọnụọgụ nke I/O | 8 |
Interface | I²C, SMBus |
Mbupute kwụsịtụrụ | Ee |
Atụmatụ | POR |
Ụdị mmepụta | Push-Pull |
Ugbu a - Isi mmalite/Sink mmepụta | 10mA, 25mA |
Ugboro elekere | 400 kHz |
Voltaji - ọkọnọ | 2.3V ~ 5.5V |
Okpomọkụ na-arụ ọrụ | -40°C ~ 85°C |
Ụdị nkwụnye | Ugwu elu |
Ngwungwu / Akpa | 16-SOIC (0.295 ", obosara 7.50mm) |
Ngwungwu ngwaọrụ ndị na-eweta ihe | 16-SO |
Nọmba ngwaahịa ntọala | PCA9554 |