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TMP92CZ26A
92CZ26A-570
(a) Main routine (condition of waiting INT4 interrupt)
(p9fc)<P96F>, <P97F>= “1” : Set P96 to int4/PX, set P97 to PY
(inte34) : Set interrupt level of INT4
(tsicr0)=98h : Pull-down resistor on, SPY on, Interrupt-set<TWIEN>
ei : Enable interrupt
X-
A
VSS
(
PX/P96/INT4
)
(PY/P97)
VREFH
VREFL
PXEN
PYEN
MXEN
MYEN
A
N3
A
N2
(MY/PG3)
A
VCC
(MX/PG2)
VREFH
VREFL
A
VCC
A
VSS
A
D Converter
Touch screen control
TSI7
SP
Y
SPX
SMX
SMY
PXD (typ.50kΩ)
Dec.
INT4
PTST
Internal data bus
Y+
Y
-
Touch
Screen
X+
TMP92CZ26A
ON
ON