TS80C54 ATMEL [ATMEL Corporation], TS80C54 Datasheet - Page 24

• Manufacturer Part Number: TS80C54
• Description: 8-bit CMOS Microcontroller 16/32 Kbytes ROM/OTP
• Manufacturer: ATMEL [ATMEL Corporation]

24
AT/TS8xC54/8X2
Table 9-4.
Table 9-5.
Reset Value = 00X1 0000b
Not bit addressable
Power-off flag reset value will be 1 only after a power on (cold reset). A warm reset doesn’t affect
the value of this bit.
Number
SMOD1
Bit
7
6
5
4
3
2
1
0
7
Mnemonic
SMOD1
SMOD0
POF
GF1
GF0
IDL
PD
Bit
PCON Register
PCON - Power Control Register (87h)
SMOD0
-
6
Serial port Mode bit 1
Serial port Mode bit 0
Reserved
Power-Off Flag
General purpose Flag
General purpose Flag
Power-Down mode bit
Idle mode bit
Set to select double baud rate in mode 1, 2 or 3.
Clear to select SM0 bit in SCON register.
Set to to select FE bit in SCON register.
The value read from this bit is indeterminate. Do not set this bit.
Clear to recognize next reset type.
Set by hardware when VCC rises from 0 to its nominal voltage. Can also be set by software.
Cleared by user for general purpose usage.
Set by user for general purpose usage.
Cleared by user for general purpose usage.
Set by user for general purpose usage.
Cleared by hardware when reset occurs.
Set to enter power-down mode.
Clear by hardware when interrupt or reset occurs.
Set to enter idle mode.
5
-
POF
4
GF1
3
Description
GF0
2
PD
1
4431E–8051–04/06
IDL
0