71m6534h-igt Maxim Integrated Products, Inc., 71m6534h-igt Datasheet - Page 28
71m6534h-igt
Manufacturer Part Number
71m6534h-igt
Description
Energy Meter Ic
Manufacturer
Maxim Integrated Products, Inc.
Datasheet
1.71M6534H-IGT.pdf
(124 pages)
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71M6533/71M6534 Data Sheet
S1CON. It is also recommended to have a timeout slightly longer than one character time on both inter-
rupts that restarts the transmit or receive logic.
28
S0CON[7]
S0CON[6]
S0CON[5]
S0CON[4]
S0CON[3]
S0CON[2]
S0CON[1]
S0CON[0]
S1CON[7]
S1CON[5]
S1CON[4]
S1CON[3]
S1CON[2]
S1CON[1]
S1CON[0]
PCON[7]
PCON[6:2]
PCON[1]
PCON[0]
Bit
Bit
Bit
SM0
SM1
SM20
REN0
TB80
RB80
TI0
RI0
SM
SM21
REN1
TB81
RB81
TI1
RI1
SMOD
–
STOP
IDLE
Symbol
Symbol
Symbol
Table 19: PCON Register Bit Description (SFR 0x87)
Table 18: The S1CON (UART1) Register (SFR 0x9B)
Table 17: The S0CON (UART0) Register (SFR 0x98)
© 2007-2009 TERIDIAN Semiconductor Corporation
Function
The SM0 and SM1 bits set the UART0 mode:
Enables the inter-processor communication feature.
If set, enables serial reception. Cleared by software to disable reception.
The 9th transmitted data bit in Modes 2 and 3. Set or cleared by the
MPU, depending on the function it performs (parity check, multiprocessor
communication etc.)
In Modes 2 and 3 it is the 9
RB80 is the stop bit. In mode 0, this bit is not used. Must be cleared by
software.
Transmit interrupt flag; set by hardware after completion of a serial trans-
fer. Must be cleared by software.
Receive interrupt flag; set by hardware after completion of a serial recep-
tion. Must be cleared by software.
Function
Sets the baud rate and mode for UART1.
Enables the inter-processor communication feature.
If set, enables serial reception. Cleared by software to disable reception.
The 9
pending on the function it performs (parity check, multiprocessor commu-
nication etc.)
In Modes A and B, it is the 9
RB81 is the stop bit. Must be cleared by software
Transmit interrupt flag, set by hardware after completion of a serial trans-
fer. Must be cleared by software.
Receive interrupt flag, set by hardware after completion of a serial recep-
tion. Must be cleared by software.
Function
The SMOD bit doubles the baud rate when set
Not used.
Stops MPU flash access and MPU peripherals including timers and
UARTs when set until an external interrupt is received.
Stops MPU flash access when set until an internal interrupt is received.
SM
th
Mode
0
1
transmitted data bit in Mode A. Set or cleared by the MPU, de-
0
1
2
3
Mode
A
B
N/A
8-bit UART
9-bit UART
9-bit UART
Description
9-bit UART
8-bit UART
Description
th
th
data bit received. In Mode 1, SM20 is 0,
data bit received. In Mode B, if SM21 is 0,
SM0
0
0
1
1
variable
variable
Baud Rate
SM1
0
1
0
1
FDS_6533_6534_004
v1.1
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