M166 Datasheet, PDF (97/127 Pages) Siemens Semiconductor Group – C16x Family of Siemens 16-Bit CMOS Single-Chip Microcontrollers

30Mar98@15:00h
C166 Family Instruction Set
Instruction Description
PWRDN
Enter Power Down Mode
PWRDN
Syntax
Operation
Description
PWRDN
Enter Power Down Mode
This instruction causes the part to enter the power down mode. In this
mode, all peripherals and the CPU are powered down until the part is
externally reset. To insure that this instruction is not accidentally exe-
cuted, it is implemented as a protected instruction. To further control the
action of this instruction, the PWRDN instruction is only enabled when the
non-maskable interrupt pin (NMI) is in the low state. Otherwise, this
instruction has no effect.
Condition Flags
E
Z
V
C
N
-
-
-
-
-
Addressing Modes
E Not affected.
Z Not affected.
V Not affected.
C Not affected.
N Not affected.
Mnemonic
PWRDN
Format
97 68 97 97
Bytes
4
Semiconductor Group
97
Version 1.2, 12.97