UPSD3354DV-40U6 Datasheet, PDF (35/272 Pages) STMicroelectronics – fast 8032 MCU with programmable logic

UPSD33xx
8032 MCU core performance enhancements
Figure 8.
PFQ operation on multi-cycle instructions
Three 2-byte, 2-cycle Instructions on UPSD33XX
Pre-Fetch Inst A
Pre-Fetch Inst B
Pre-Fetch Inst C
PFQ Inst A, Byte 1 Inst A, Byte 2 Inst B, Byte 1 Inst B, Byte 2 Inst C, Byte 1 Inst C, Byte 2 Continue to Pre-Fetch
4-clock
Macine Cycle
MCU
Previous Instruction
Execution
Phase 1
A1 A2
Phase 2
Process A
Phase 3
B1 B2
Phase 4
Process B
Phase 5
C1 C2
Phase 6
Process C
Next Inst
Instruction A
Instruction B
Instruction C
AI08810b
Figure 9. UPSD33xx multi-cycle instructions compared to standard 8032
Three 2-byte, 2-cycle Instructions, UPSD33XX vs. Standard 8032b
t(s) ^{24 Clocks Total (4 clocks per cycle)}
duc ^{UPSD33XX A1 A2}
Inst A B1 B2
1 Cycle
Inst B
C1 C2 Inst C
ro _{72 Clocks (12 clocks per cycle)}
Obsolete ^{Product(s) - Obsolete P Std 8032}
Byte 1 Byte 2 Process Inst A Byte 1 Byte 2 Process Inst B Byte 1 Byte 2 Process Inst C
1 Cycle
AI08811b
Doc ID 9685 Rev 7
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