UPSD3422_06 Datasheet, PDF (82/293 Pages) STMicroelectronics – Turbo Plus Series Fast Turbo 8032 MCU with USB and Programmable Logic

MCU bus interface
uPSD34xx
Table 38. Number of MCU_CLK Periods Required to Optimize Bus Transfer Rate
MCU Clock Frequency,
MCU_CLK (f_MCU)
CW[1:0] Clk
Periods
3.3V⁽¹⁾ 5V⁽¹⁾
RDW[1:0] Clk
Periods
3.3V⁽¹⁾ 5V⁽¹⁾
WRW[1:0] Clk
Periods
3.3V⁽¹⁾ 5V⁽¹⁾
40MHz, Turbo mode PSD⁽²⁾
5
4
5
4
5
4
40MHz, Non-Turbo mode PSD
6
5
6
5
6
5
36MHz, Turbo mode PSD
5
4
5
4
5
4
36MHz, Non-Turbo mode PSD
6
4
6
4
6
4
32MHz, Turbo mode PSD
5
4
5
4
5
4
32MHz, Non-Turbo mode PSD
5
4
5
4
5
4
28MHz, Turbo mode PSD
4
3
4
4
4
4
28MHz, Non-Turbo mode PSD
5
4
5
4
5
4
24MHz, Turbo mode PSD
4
3
4
4
4
4
24MHz, Non-Turbo mode PSD
4
3
4
4
4
4
20MHz and below, Turbo mode PSD
3
3
4
4
4
4
20MHz and below, Non-Turbo mode
PSD
3
3
4
4
4
4
Note: 1 V_DD of the PSD Module
2 “Turbo mode PSD” means that the PSD Module is in the faster, Turbo mode (default
condition). A PSD Module in Non-Turbo mode is slower, but consumes less current. See
PSD Module section, titled “PLD Non-Turbo Mode” for details.
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