at89lp216-20xi ATMEL Corporation, at89lp216-20xi Datasheet - Page 17

• Manufacturer Part Number: at89lp216-20xi
• Description: At89lp216 8-bit Microcontroller With 2k Bytes Flash
• Manufacturer: ATMEL Corporation

Figure 11-3. Reset Recovery from Power-down.
Table 11-1.
3621B–MICRO–11/07
Symbol
SMOD1
SMOD0
PWDEX
POF
GF1, GF0
PD
IDL
PCON = 87H
Not Bit Addressable
Bit
Function
Double Baud Rate bit. Doubles the baud rate of the UART in Modes 1, 2, or 3.
Frame Error Select. When SMOD0 = 1, SCON.7 is SM0. When SMOD0 = 1, SCON.7 is FE. Note that FE will be set after
a frame error regardless of the state of SMOD0.
Power-down Exit Mode. When PWDEX = 1, wake up from Power-down is externally controlled. When PWDEX = 1, wake
up from Power-down is internally timed.
Power Off Flag. POF is set to “1” during power up (i.e. cold reset). It can be set or reset under software control and is not
affected by RST or BOD (i.e. warm resets).
General-purpose Flags
Power-down bit. Setting this bit activates power-down operation.
Idle Mode bit. Setting this bit activates Idle mode operation
PCON
SMOD1
7
– Power Control Register
Internal
Internal
XTAL1
SMOD0
Reset
Clock
PWD
RST
6
PWDEX
5
POF
4
GF1
t SUT
3
GF0
2
Reset Value = 000X 0000B
PD
1
AT89LP216
IDL
0
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