IA6805E2_07 Datasheet, PDF (28/33 Pages) InnovASIC, Inc – Microprocessor Unit

IA6805E2
Microprocessor Unit
As of Production Version 00
29 August 2007
INT_EXT_CLK
t_TL
t_TH
TIMER
COUNTER=$00
t_TLTL
TCR7
t_IVASH
AS
n0 n1
n2
n3
n4
n5
n6
n7
DS
A[12:8]
OP CODE ADDR
ADDRESS + 1
1F (FF) 1F (FF)
B[7:0]
OP CODE
ADDRESS
ADDR + 1
8F
WAIT OP CODE
RW_N
INT ROUTINE
STARTING
ADDRESS
PCL PCH X A CC F6 F7 SP
SP-1
SP-2
SP-3
SP-4
NEW PCH NEW PCL
1ST OP CODE
INT ROUTINE
Figure 17. Timer Interrupt After WAIT Instruction Timing
INT_EXT_CLK
t_TL
t_TH
TIMER
COUNTER=$00
t_TLTL
TCRB7
t_IVASH
AS
n0 n1
n2
n3
n4
n5
n6
n7
DS
A[12:8]
OP CODE ADDR
ADDRESS + 1
1F (FF) 1F (FF)
B[7:0]
OP CODE
ADDRESS
ADDR + 1
8E
STOP OP CODE
RW_N
INT ROUTINE
STARTING
ADDRESS
PCL PCH X A CC F6 F7 SP
SP-1
SP-2
SP-3
SP-4
NEW PCH NEW PCL
1ST OP CODE
INT ROUTINE
Figure 18. Interrupt Recovery From STOP Instruction Timing
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