UPSD3422_06 Datasheet, PDF (66/293 Pages) STMicroelectronics – Turbo Plus Series Fast Turbo 8032 MCU with USB and Programmable Logic

Power saving modes
uPSD34xx
Table 26.
Bit 7
SMOD0
PCON: Power Control Register (SFR 87h, reset value 00h)
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
SMOD1
–
POR
RCLK1 TCLK1
PD
Bit 0
IDL
Bit
Symbol
R/W
Function
Baud Rate Double Bit (UART0)
0 = No Doubling
7
SMOD0
R,W
1 = Doubling
(See Section 21.3: UART baud rates on page 102 for details.)
Baud Rate Double Bit for 2nd UART (UART1)
0 = No Doubling
6
SMOD1
R,W
1 = Doubling
(See Section 21.3: UART baud rates on page 102 for details.)
5
–
–
Reserved
Only a power-on reset sets this bit (cold reset). Warm reset
will not set this bit.
4
POR
R,W ^{0 = Cleared to zero with firmware}
1 = Is set only by a power-on reset generated by Supervisory
circuit (see Section 19.3: Power-up reset on page 84 for
details).
Received Clock Flag (UART1)
3
RCLK1
R,W
(See Table 43 on page 93 for flag description.)
Transmit Clock Flag (UART1)
2
TCLK1
R,W
(See Table 43 on page 93 for flag description)
Activate Power-down Mode
1
PD
R,W 0 = Not in Power-down Mode
1 = Enter Power-down Mode
Activate Idle Mode
0
IDL
R,W 0 = Not in Idle Mode
1 = Enter Idle Mode
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