Maxim Integrated 71M6513H Power Meter IC Family Software - Manual (Page 96)

71M651x Software User’s Guide
6.1.2. 80515 Features
Below is a summary of the 80515 features:
♦ Control Unit
 8-bit instruction decoder
 Reduced instruction cycle time up to 12 times
♦ Arithmetic-Logic Unit
 8 bit arithmetic and logical operations
 Boolean manipulations
 8 x 8 bit multiplication and 8 / 8 bit division
♦ 32-bit Input/Output ports
 Four 8-bit I/O ports
 Alternate port functions such as external interrupts and serial interfaces are separated, providing
extra port pins when compared with the standard 8051
♦ Two 16-bit Timer/Counters
♦ Two Serial Peripheral Interfaces in full duplex mode, capable of parity generation
 Synchronous mode, fixed baud rate, Serial 0 only
 8-bit UART mode, variable baud rate
 9-bit UART mode, fixed baud rate, Serial 0 only
 9-bit UART mode, variable baud rate
 7E1, 7O1, 7N2, 7E2, 7O2, 8N1, 8E1, 8O1, 8N2, 9N1 data formats supported
 Two Internal baud rate generators independent from timers
♦ Interrupt Controller
 Four priority levels with 11 interrupt sources
♦ 15-bit Programmable Watchdog Timer
♦ Internal Data Memory interface
 Can address up to 256B of internal data memory space
♦ External Memory Interface (External = external to the 80515 core, but on-chip)
 Can address up to 64kB of external program memory
 Can address up to 2kB of external data memory plus 1kB CE DRAM and 4kB CE PRAM
 Separate address/data bus to allow easy connection to memories
 Variable length code fetch and MOVC to access fast/slow program memory
 Variable length MOVX to access fast/slow RAM or peripherals
 Dual data pointer for fast data block transfer
♦ Special Function Registers interface
 Services up to 74 special function registers (SFRs)
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