W78E365/W78E365A
6.4.2 Power-down Mode
When the PD bit in the PCON register is set, the processor enters the power-down mode. In this
mode all of the clocks are stopped, including the oscillator. To exit from power-down mode is by a
hardware reset or external interrupts INT0 to INT1 when enabled and set to level triggered.
6.4.3 Reduce EMI Emission
The W78E365 allows user to diminish the gain of on-chip oscillator amplifier by using programmer to
clear the B7 bit of security register. Once B7 is set to 0, a half of gain will be decreased. Care must be
taken if user attempts to diminish the gain of oscillator amplifier, reducing a half of gain may affect the
external crystal operating improperly at high frequency. The value of C1 and C2 may need some
adjustment while running at lower gain.
ALE Off Function
Auxiliary Register
Bit:
7
-
6
-
5
-
4
-
3
-
2
-
1
-
0
ALEOFF
Mnemonic: AUXR
Address: 8EH
ALEOFF: Set this bit to disable ALE output.
6.5 Reset
The external RESET signal is sampled at S5P2. To take effect, it must be held high for at least two
machine cycles while the oscillator is running. An internal trigger circuit in the reset line is used to
deglitch the reset line when the W78E365 is used with an external RC network. The reset logic also
has a special glitch removal circuit that ignores glitches on the reset line. During reset, the ports are
initialized to FFH, the stack pointer to 07H, PCON (with the exception of bit 4) to 00H, and all of the
other SFR registers except SBUF to 00H. SBUF is not reset.
6.5.1 W78E365 Special Function Registers (SFRs) and Reset Values
F8
+B
CHPENR
00000000
F0
E8
E0
D8
D0
C8
C0
00000000
+ACC
00000000
+P4
PWMP
PWM0
PWM1
PWMCON1
00000000
PWM2
PWM3
11111111
+PSW
00000000
00000000
00000000
00000000
00000000
00000000
+T2CON
00000000
+XICON
00000000
T2MOD
RCAP2L
00000000
P4CONA
00000000
RCAP2H
00000000
P4CONB
00000000
TL2
TH2
PWMCON2
00000000
SFRFD
PWM4
00000000
SFRCN
00000000
00000000
SFRAL
00000000
SFRAH
00000000
00000000
00000000
00000000
Publication Release Date: January 10, 2007
Revision A9
- 9 -
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