ViewSonic VE510+-1 Service Manual page 29

Features of SM5964
Working voltage: 4.5V through 5.5V
Program voltage: 5V
General 8052 family compatible
12 clocks per machine cycle
64K byte on chip flash memory with In-System Programming (ISP) capability
1024 byte on chip data RAM
Three 16 bit Timers/Counters
One Watch Dog Timer
Four 8-bit I/O ports for PDIP package
Four 8-bit I/O ports + one 4-bit I/O ports for PLCC or QFP package
Full duplex serial channel
Bit operation instruction
Page free jumps
8-bit Unsigned Division
8-bit Unsigned Multiply
BCD arithmetic
Direct Addressing
Indirect Addressing
Nested Interrupt
Two priority level interrupt
A serial I/O port
Power save modes: Idle mode and Power down mode
Code protection function
Low EMI (inhibit ALE)
Reset with address $0000 blank initiate ISP service program
ISP service program space configurable in N*512byte (N=0 to 8) size
Bank mapping direct addressing mode for access on-chip RAM
Five channel Specific PWM (SPWM) build-in
Direct LED drive output at port 4
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Confidential - - Do Not Copy VE510+-1