W78E365 Datasheet, PDF (8/40 Pages) Winbond – 8-BIT MICROCONTROLLER

W78E365
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
-
-
-
-
Mnemonic: AUXR
ALEOFF: Set this bit to disable ALE output.
3
2
-
-
Address: 8EH
1
0
- ALEOFF
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
F0
+B
00000000
CHPENR
00000000
E8
E0
+ACC
00000000
D8
+P4
11111111
PWMP
00000000
PWM0
00000000
PWM1
00000000
PWMCON1
00000000
PWM2
00000000
PWM3
00000000
D0
+PSW
00000000
C8
+T2CON
00000000
T2MOD
00000000
RCAP2L
00000000
RCAP2H
00000000
C0
+XICON
00000000
P4CONA
00000000
P4CONB
00000000
TL2
00000000
SFRAL
00000000
TH2
00000000
SFRAH
00000000
PWMCON2
00000000
SFRFD
00000000
PWM4
00000000
SFRCN
00000000
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