MC68HC11KW1 Datasheet, PDF (211/238 Pages) Motorola, Inc – High-density complementary metal oxide semiconductor HCMOS) microcontroller unit

Internal
clocks
IRQ⁽¹⁾
IRQ⁽²⁾
or XIRQ
E clock
PW_IRQ
t_STOPDELAY(3)
Address⁽⁴⁾
SA⁽⁶⁾ SA+1
SA+1
Op-
code
Resume program with instruction which follows the STOP instruction
Address⁽⁵⁾
SA⁽⁶⁾ SA+1
SA+1 SA+2 SP… SP–7 SP–8 SP–8 FFF2 FFF3
New
PC
Notes:
(1) Edge sensitive IRQ pin (IRQE = 1).
(2) Level sensitive IRQ pin (IRQE = 0).
(3) If DLY = 1: t_STOPDELAY = 4064 t_CYC
If DLY = 0: t_STOPDELAY = 4 t_CYC
(4) XIRQ with X-bit in CCR = 1.
(5) IRQ (or XIRQ, with X-bit = 0; in this case vector fetch will be $FFF4/5).
(6) SA = STOP address.
Figure A-5 STOP recovery timing
E clock
IRQ, XIRQ,
or internal
interrupts
Address
R/W
t_PCSU
t_WRS
WA⁽¹⁾ WA+1 SP
SP–1 SP–2…SP–8 SP–8 SP–8…SP–8 SP–8 SP–8 SP–8 VA⁽²⁾
VA+1
New
PC
Stack registers
Notes:
RESET also causes recovery from WAIT.
(1) WA = WAIT address.
(2) VA = Vector address.
Figure A-6 WAIT recovery timing
A
MC68HC11KW1
ELECTRICAL SPECIFICATIONS
A-7