Maxim Integrated High-Speed Microcontroller - Manual (Page 175)

High-Speed Microcontroller User’s Guide
Rev: 062210 175 of 176
Table 18-A. Product Feature Matrix
FEATURE DS80C310 DS80C320 DS80C323 DS83C520 DS87C520 DS87C530
Internal Program ROM
16kB Mask
ROM
16kB
EPROM
16kB
EPROM
Internal Scratchpad RAM 256 bytes 256 bytes 256 bytes 256 bytes 256 bytes 256 bytes
Internal MOVX SRAM 1kB SRAM 1kB SRAM
Serial Ports 1 2 2 2 2 2
External Interrupts 6 6 6 6 6 6
16-Bit Timers 3 3 3 3 3 3
Watchdog Timer     
Power-Fail/Precision Reset     
Power-Fail Interrupt     
Data Pointers 2 2 2 2 2 2
Data Pointer Decrement
Power Management Modes   
Ring Oscillator     
EMI Reduction Mode   
Real-Time Clock 
NV SRAM 
Operating Voltage
4.5V to
5.5V
4.5V to
5.5V
2.7V to
5.5V
4.5V to
5.5V
4.5V to
5.5V
4.5V to
5.5V