CHAPTER 13 RESET FUNCTION
592
User’s Manual U15195EJ5V0UD
(a) Pins to be controlled
TO000 to TO005, TO010 to TO015, P10/TO10/TIUD10, P11/INTP100/TCUD10,
P12/INTP101/TCLR10, P20/INTP20/TI2, P21/INTP21/TO21, P22/INTP22/TO22,
P23/INTP23/TO23, P24/INTP24/TO24, P25/INTP25/TCLR2, P26/TCLR3/INTP30/TI3,
P27/INTP31/TO3
(b) Circuit of above pins
Output buffer
I/O control
signal of pin
5 V system reset (RES5)
1: Reset
Output buffer enable signal
0: Output buffer off
1: Output buffer on
(at 3.3 V system reset)
V
DD
V
DD
Pin to be controlled
Level
shifter
(c) Internal reset of 5 V system/3.3 V system power supply
(i) Operation on turning ON/OFF power
V
DD
(5 V system)
REGIN (3.3 V system)
RESET (input)
Internal RES5 (5 V system)
Internal RES3 (3.3 V system)
Pin to be controlled
Analog delay
High impedance
Pin manipulation instruction
Low level because
power is off
Controlled by
external reset IC
Low level because
power is off
Operates
Note
Note
The internal system reset signal stays active for at least 4 system clocks after the reset status caused
by the RESET pin is released.
Содержание PD703114
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