CXP853P40A
(3) Interrupt, Reset input
(Ta = –10 to +75°C, VDD = 4.5 to 5.5V, Vss = 0V reference)
Item
Symbol
Pin
INT0 to INT2
RST
Condition Min.
Max.
Unit
µs
External interrupt
High and Low level widths
t
t
IH
IL
1
1
Reset input low level width
t
RSL
µs
8/fc'
1
The value of fc' varies as shown below depending on the specification of oscillation clock option.
4MHz version ... fc' = fc
8MHz version ... fc' = fc/2
tIH
tIL
0.8VDD
INT0 to INT2
(falling edge)
0.2VDD
Fig. 5. Interrupt input timing
tRSL
RST
0.2VDD
Fig. 6. RST input timing
(4) Power-on reset
Power-on reset
(Ta = –10 to +75°C, VDD = 4.5 to 5.5V, Vss = 0V reference)
Item
Symbol Pin
Condition
Min.
0.05
1
Max. Unit
Power supply rise time
Power supply cutt-off time
tR
50
ms
ms
Power-on reset
VDD
tOFF
Repeated power-on reset
4.5V
VDD
0.2V
0.2V
tR
tOFF
The power supply should rise smoothly.
Fig. 7. Power-on reset
– 16 –
SONY [ SONY CORPORATION ]
