DS80CH11 Maxim, DS80CH11 Datasheet - Page 70

• Manufacturer Part Number: DS80CH11
• Description: The system energy manager is a highly integrated microcontroller that provides several key features for systems including key scanning and control, battery and power management, as well as two 2-Wire serial I/O Ports
• Manufacturer: Maxim

Table 12–3 is a summary of the bits relating to Slow Clock Mode and its operation.
ENTERING / EXITING SLOW CLOCK MODE Figure 12–1
DS80CH11
011200 70/88
LOWEST POWER OPERATING STATE
ENTER SLOW CLOCK MODE
INVOKE SLOW CLOCK MODE
CLOCK SPEED = 64 OR 1024
HARDWARE TO CAUSE
CD1, CD0=11 FOR 1024
CD1, CD0=10 FOR 64
DISABLE CRYSTAL?
WITHOUT CRYSTAL
(NO FAST SWITCH
A SWITCHBACK
SET SWB=1
XT/RG=0
STATUS=0
XTOFF = 1
OPERATE
TO XTAL)
ALLOW
CHECK
?
?
?
Y
Y
Y
Y
N
N
N
N
IMPENDING ACTIVITY
CHECK AND CLEAR
DONE
DONE
SOFTWARE DECIDES
CD1, CD0 = 01 FOR 4
TO EXIT
EXITING SLOW CLOCK MODE
STATUS=0
XTOFF = 1
XTOFF = 0
XT/RG=1
XTUP = 1
CHECK
DONE
?
?
?
Y
Y
Y
HARDWARE AUTOMATICALLY
SWB=1 AND EXTERNAL
ACTIVITY OCCURS
SWITCHES CD1, CD0
N
N
N
XT/RG=1
DONE
DONE