Details, datasheet, quote on part number: OM5234
CategoryMicrocontrollers => CISC->8051/80C51 Family->8031/8051
TitleCISC->8051/80C51 Family->8031/8051
DescriptionOM5234/OM5284; CMOS Single-chip 8-bit Microcontrollers
CompanyPhilips Semiconductors (Acquired by NXP)
DatasheetDownload OM5234 datasheet
Cross ref.Similar parts: OM5234/FBP/556
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Features, Applications


The OM5234 and OM5284 single-chip 8-bit microcontrollers are manufactured in an advanced CMOS process and are derivatives of the 80C51 microcontroller family. The OM5234 and OM5284 are pre-programmed devices for specific applications. Unless specifically stated otherwise, all references to OM5234 apply equally to OM5284. The OM5234 contains a non-volatile 8 read-only program memory, a volatile 8 read/write data memory, four 8-bit I/O ports, two 16-bit timer/event counters (identical to the timers of the 80C51), a multi-source, two-priority-level, nested interrupt structure, UART and on-chip oscillator and timing circuits.


80C51 central processing unit 8 ROM 8 RAM Two standard 16-bit timer/counters Four 8-bit I/O ports Full-duplex UART facilities Power control modes

OM5234 YYY Device OM5234 Frequency Range to 24MHz Temperature Range to 70C PART NUMBER OM5284EAYY OM5284EPYY ROM code for application 5XX, etc. Package designator A = Plastic Leaded Chip Carrier B = Plastic Quad Flat Package P = Plastic Dual In-Line Package Device OM5284 Frequency Range Y ZZ ROM code for application 02, 03 Package designator A = Plastic Leaded Chip Carier B = Plastic Quad Flat Package P = Plastic Dual In-Line Package FREQUENCY (MHz) DRAWING NUMBER SOT187-2 SOT129-1

TEMPERATURE RANGE C AND PACKAGE to 70C, Plastic Quad Flat Package to 70C, Plastic Dual In-Line Package to 70C, Plastic Leaded Chip Carrier to 70C, Plastic Quad Flat Package to 70C, Plastic Leaded Chip Carrier to 70C, Plastic Dual In-Line Package

P1.6 P1.7 RST DUAL IN-LINE PACKAGE 40 VDD EA 30 ALE 29 PSEN 21 P2.0/A8 Pin Function NC* P1.6 P1.7 RST P3.0/RxD NC* P3.3/INT1 18 Pin Function XTAL2 XTAL1 VSS NC* P2.6/A14 28 Pin Function P2.7/A15 PSEN ALE NC* P0.1/AD1 P0.0/AD0 VDD 29 PLCC 7 39


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