[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-560526-105":3,"detail-sidebar-cat-0-en-105":81,"doc-detail-560526-en":130},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":74,"head_meta":76,"extra_data":78,"updated_unix":80},105,"en","8-bit-single-chip-microcontroller-sab-8051a8031a-family-overview-and-key-specifications","8-Bit Single-Chip Microcontroller - SAB 8051A/8031A Family - Overview and Key Specifications","","8-bit single-chip microcontrollers from the Siemens SAB 8051A/8031A family are described, including SAB 8051A with non-volatile 4K×8 mask-programmable ROM and SAB 8031A with no program memory. The document lists operating frequencies (12/16/20 MHz), RAM and ROM sizes, four 8-bit I/O ports with 32 lines, and two 16-bit timer/event counters. It covers full-duplex serial communication, expandable external memory up to 128 Kbytes, compatibility with SAB 8080/8085 peripherals, and package and temperature range options, followed by ordering and pin-function tables.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/technology/","Technology",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/8-bit-single-chip-microcontroller-sab-8051a8031a-family-overview-and-key-specifications/560526/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/8-bit-single-chip-microcontroller-sab-8051a8031a-family-overview-and-key-specifications/560526.png","ImageObject",300,407,{"name":42,"@type":43},"Fahsai","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-20","2026-10-12",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",6,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"What is the key difference between SAB 8051A and SAB 8031A?","Question",{"text":63,"@type":64},"SAB 8051A includes non-volatile 4K×8 mask-programmable ROM, while SAB 8031A is identical except that it lacks the program memory.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"What are the supported operating frequencies and basic memory sizes?",{"text":68,"@type":64},"The family supports 12 MHz, 16 MHz, and 20 MHz. SAB 8051A provides 4K×8 ROM and 128×8 RAM, with the same general I/O and timer structure across the family.",{"name":70,"@type":61,"acceptedAnswer":71},"How does the microcontroller handle serial communication and external memory expansion?",{"text":72,"@type":64},"It provides a high-performance full-duplex serial channel with flexible transmit/receive bound-rate capability (UART). External memory can be expanded using standard TTL-compatible memories, expandable up to 128 Kbytes.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},560526,1791850786,{"code":4,"msg":82,"data":83},"success",[84,88,92,96,101,104,109,114,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & 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factory mask-programmable ROM  \nSAB 8031A Microcontroller for external ROM  \n● Version for 12MHz/16MHz/20 MHzoperating frequency  \n●4K×8 ROM  \n●128×8 RAM  \n● Four 8-bit ports,32 I/O lines  \n● Two 16-bit timer/event counters  \n●High-performance full-duplex serialchannel with flexible transmit/receivebound rate capability  \n●External memory expandable up to 128Kbyte  \n● Compatible with SAB 8080/8085peripherals  \nSIEMENS                SAB 8051A/8031A Family  \n● Boolean processor  \n●218user bit-addressable locaiions  \n●Most instructions execute in:1μs instruction cycle tirme at 12MHz750 ns instruction cycle time at 16 MHz600 ns instruction cycle time at 20 MHz  \n●4μs(3μs,2.4μs)multiply and divide  \n● Packages P-DiP-40 and PL-CC-44  \n● Two tempsratre ranges available0to 70 C-40 to 85℃:T40/85  \nThe SAB 8051A/8031A Family arestandalone,high-performance single-chipmicrocontrollers fabricated in +  5 Vadvanced N-channel,silicon-gate SiemensMYMOS technology and supplied in a 40-pinplastic P-DIP or 44-pin plastic leaded chipcarrier(PL-CC-44)package.It provides thehardware features,architectural enhance-ments and instructions that are necessary tomake it a powerful and cost-effectivecontroller for applications requiring up to 64Kbytes of program memory and/or up to 64Kbytes of data storage.  \nThe SAB 8051A contains a non-volatile 4K×8 read-only program memory;a volatile 128×8 read/write data memory;32 I/O lines;two16-bit timer/counters;a five-source,two-  \nFigure 2  \nSAB 8051A/8031A FamilySAB 8051A/8031A  \n\n| T0   | RAM  \u003Cbr>128x8   |  | Port o   |\n| --- | --- | --- | --- |\n| CPU   |  | 8-Bit  \u003Cbr>USART   | Port 1   |\n|  |  |  | Port 2   |\n| T1   | ROM  \u003Cbr>4kx8   |  | Port 3   |\n\npriority-level,nested interrupt structure;aserial I/O port for either multi-processorcommunications,I/O expansion,or full-duplex UART;and on-chip oscillator andclock circuits.The SAB 8031A is identicalwith the SAB 8051A,except that it lacks theprogram memory.  \nFor systems that require extra capability,theSAB8051A can be expanded using standardTTL-compatible memories and the byte-oriented SAB 8080 and SAB 8085peripherals.  \nThe parts are available for standardtemperature range(0 to 70℃)and extendedtemperature range (T40/85:-40 to 85℃).  \n# Ordering Information\n\n\n| Type   | Package   | Description  \u003Cbr>(8-bit single-chip microcontroller)   |\n| --- | --- | --- |\n| SAB 8031A-P-40/85   | P-DIP-40   | for external memory,  \u003Cbr>12 MHz,ext.Temp.   |\n| SAB 8031A-N-40/85   | PL-CC-44   |  |\n| SAB 8031A-P   | P-DIP-40   | for external memory,  \u003Cbr>12 MHz   |\n| SAB 8031A-N   | PL-CC-44   |  |\n| SAB 8031A-16-P   | P-DIP-40   | for external memory,  \u003Cbr>16 MHz   |\n| SAB 8031A-16-N   | PL-CC-44   |  |\n| SAB 8031A-20-P   | P-DIP-40   | for external memory,  \u003Cbr>20 MHz   |\n| SAB 8031A-20-N   | PL-CC-44   |  |\n| SAB 8051A-P-40/85   | P-DIP-40   | with 4-KByte mask-programmable ROM  \u003Cbr>12 MHz,ext.Temp.   |\n| SAB 8051A-P   | P-DIP-40   | with 4-KByte mask-programmable ROM  \u003Cbr>12 MHz   |\n| SAB 8051A-N   | PL-CC-44   |  |\n| SAB 8051A-16-P   | P-DIP-40   | with 4-KByte mask-programmable ROM  \u003Cbr>16 MHz   |\n| SAB 8051A-16-N   | PL-CC-44   |  |\n| SAB 8051A-20-P   | P-DIP-40   | with 4-KByte mask-programmable ROM  \u003Cbr>20 MHz   |\n| SAB 8051A-20-N   | PL-CC-44   |  |\n\nFigure 3  \nLogic Symbol  \n# Pin Definitions and Functions\n\n\n| Symbol   | Pin   |  | Input(1)  \u003Cbr>Output (O)   | Function   |\n| --- | --- | --- | --- | --- |\n|  | P-DIP-40   | PL-CC-44   |  |  |\n| P1.0-P1.7   | 1-8   | 2-9   | I/O   | PORT 1 is an 8-bit quasi-bidirectional I/O port.It is used for  \u003Cbr>the low-order address byte during program verification.Port  \u003Cbr>1 can sink/source four LS TTL loads.   |\n| RST/VPD   | 9   | 10   |  | RESET A high level on this pin resets the SAB 8051A.A  \u003Cbr>small internal pulldown resistor permits power-on reset us-  \u003Cbr>ing only a capacitor connected to Vcc.If VPD is held within its  \u003Cbr>spec while Vcc drops below spec,","cbCaiaGdbDt54dJ5","https://ap.wps.com/l/cbCaiaGdbDt54dJ5","pdf",6187609,24,"English","# Ordering Information\n# Pin Definitions and Functions","[{\"question\":\"What is the key difference between SAB 8051A and SAB 8031A?\",\"answer\":\"SAB 8051A includes non-volatile 4K×8 mask-programmable ROM, while SAB 8031A is identical except that it lacks the program memory.\"},{\"question\":\"What are the supported operating frequencies and basic memory sizes?\",\"answer\":\"The family supports 12 MHz, 16 MHz, and 20 MHz. SAB 8051A provides 4K×8 ROM and 128×8 RAM, with the same general I/O and timer structure across the family.\"},{\"question\":\"How does the microcontroller handle serial communication and external memory expansion?\",\"answer\":\"It provides a high-performance full-duplex serial channel with flexible transmit/receive bound-rate capability (UART). External memory can be expanded using standard TTL-compatible memories, expandable up to 128 Kbytes.\"}]","8-Bit Single-Chip Microcontroller - SAB 8051A/8031A Family - Overview and Key Specifications | PDF",1791803427]