SAB80515 Datasheet, PDF (227/270 Pages) Siemens Semiconductor Group – 8-Bit Single-Chip Microcontroller Family

Device Specifications
Functional Description
The members of the SAB 80515 family of microcontrollers are:
– SAB 80C515: Microcontroller, designed in Siemens ACMOS technology, with
8 Kbyte factory mask-programmable ROM
– SAB 80C535: ROM-less version of the SAB 80C515
– SAB 80515:
Microcontroller, designed in Siemens MYMOS technology, with
8 Kbyte factory mask-programmable ROM
– SAB 80535:
ROM-less version of the SAB 80515
The SAB 80C535 is identical to the SAB 80C515, except that it lacks the on-chip ROM.
In this data sheet the term "SAB 80C515" is used to refer to both the SAB 80C515 and
SAB 80C535, unless otherwise noted.
Principles of Architecture
The architecture of the SAB 80C515 is based on the SAB 8051/SAB 80C51 microcontroller
family. The following features of the SAB 80C515 are fully compatible with the SAB 80C51
features:
– Instruction set
– External memory expansion interface (port 0 and port 2)
– Full-duplex serial port
– Timer/counter 0 and 1
– Alternate functions on port 3
– The lower 128 bytes of internal RAM and the lower 4 Kbytes of internal ROM
The SAB 80C515 additionally contains 128 bytes of internal RAM and 4 Kbytes of internal
ROM, which results in a total of 256 bytes of RAM and 8 Kbytes of ROM on-chip.
The SAB 80C515 has a new 16-bit timer/counter with a 2:1 prescaler, reload mode, compare
and capture capability. It also contains at 16-bit watchdog timer, an 8-bit A/D converter with
programmable reference voltages, two additional quasi-bidirectional 8-bit ports, one 8-bit input
port for analog or digital signals, and a programmable clock output (f_OSC/12).
Furthermore, the SAB 80C515 has a powerful interrupt structure with 12 vectors and 4
programmable priority levels.
Figure 1 shows a block diagram of the SAB 80C515.
Semiconductor Group
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