ZBasic System Library
84
ZBasic Microcontrollers
Type
Subroutine
Invocation
CPUSleep()
CPUSleep(mode)
Parameter
Method
Type
Description
mode
ByVal
Byte
The sleep mode to use.
Discussion
This routine puts the processor into a special sleep mode in which activity and power consumption are
reduced. The characteristics of the sleep mode are controlled by certain bits in one or more CPU
registers (see the tables below). For more information about the modes, consult the Atmel
documentation for the ATtiny, ATmega or ATxmega processor being used. If the optional mode
parameter (not supported for VM devices) is not given, the existing sleep mode bit values will be used.
Registers Containing the Sleep Mode Bits for ZX Devices
ZX Device
Register
ZX-24, ZX-40, ZX-44, ZX-24e, ZX-128e, ZX-128ne
Register.MCUCR
ZX-24a, ZX-24p, ZX-24n, ZX-24r, ZX-24s, ZX-24t, ZX-24ae, ZX-24ne, ZX-
24pe, ZX-24ru, ZX-24su
Register.SMCR
ZX-40a, ZX-40p, ZX-40n, ZX-40r, ZX-40s, ZX-40t
Register.SMCR
ZX-44a, ZX-44p, ZX-44n, ZX-44r, ZX-44s, ZX-44t
Register.SMCR
ZX-328n, ZX-328l, ZX-32n, ZX-32l, ZX-328nu
Register.SMCR
ZX-1281, ZX-1281n, ZX-1280, ZX-1280n, ZX-1281e, ZX-1281ne
Register.SMCR
ZX-24x, ZX-24u, ZX-32a4, ZX-128a1, ZX-24xu
Register.SLEEP_CTRL
Registers Containing the Sleep Mode Bits for Generic Target Devices
Target Device
Register
tiny24, tiny24A, tiny44, tiny44A, tiny84, tiny84A, tiny2313, tiny2313A,
tiny4313, tiny1634, tiny441, tiny841
Register.MCUCR
tiny48, tiny88, tiny87, tiny167, tiny828
Register.SMCR
mega48, mega48A, mega48P, mega48PA, mega48PB, mega88, mega88A,
mega88P, mega88PA, mega88PB, mega168, mega168A, mega168P,
mega168PA, mega168PB, mega328, mega328P, mega328PB
Register.SMCR
mega8515, mega161, mega162
Register.MCUCR
Register.MCUCSR
Register.EMCUCR
mega8, mega8A, mega16, mega16A, mega32, mega32A, mega64, mega64A,
mega128, mega128A, mega163, mega323, mega8535
Register.MCUCR
mega164A, mega164P, mega164PA, mega324P, mega324PA, mega644,
mega644A, mega644P, mega644PA, mega1284P, mega1281, mega2561,
mega640, mega1280, mega2560
Register.SMCR
mega165, mega165A, mega165P, mega165PA, mega325, mega325P,
mega645, mega645A, mega645P, mega169, mega169A, mega169P,
mega169PA, mega329, mega329P, mega329PA, mega649, mega649A,
mega649P, mega3250, mega3250P, mega6450, mega6450A, mega6450P,
mega3290, mega3290P, mega6490, mega6490A, mega6490P, mega16U4,
mega32U4, mega8U2, mega16U2, mega32U2, AT90USB82, AT90USB162,
AT90CAN32, AT90CAN64, AT90CAN128, AT90USB646, AT90USB647,
AT90USB1286, AT90USB1287
Register.SMCR
all ATxmega
Register.SLEEP_CTRL
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