Figure 14: External Interrupt Logic - Philips LPC2194 User Manual

Philips Semiconductors
ARM-based Microcontroller
VPB Bus Data
Glitch
EINTi
Filter
EXTPOLARi
EXTMODEi
Reset
Write 1 to EXTINTi
System Control Block
Wakeup Enable
(one bit of EXTWAKE)
D Q
pclk
S
1
D
Q
R

Figure 14: External Interrupt Logic

LPC2119/2129/2194/2292/2294
VPB Read
of EXTWAKE
EINTi to
Wakeup Timer
(Figure 16)
Interrupt Flag
(one bit of EXTINT)
S
Q
R
pclk
73
Preliminary User Manual
S
to VIC
Q
R
VPB Read
of EXTINT
pclk
May 03, 2004