參數(shù)資料
型號(hào)： W78E374
英文描述： Monitor Controller
中文描述： 監(jiān)測(cè)控制器
文件頁數(shù)： 8/35頁
文件大?。?/td> 186K
代理商： W78E374
Preliminary W78E365
- 8 -
Power Management
Idle Mode
The idle mode is entered by setting the IDL bit in the PCON register. In the idle mode, the internal
clock to the processor is stopped. The peripherals and the interrupt logic continue to be clocked. The
processor will exit idle mode when either an interrupt or a reset occurs.
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 INT3 when enabled and set to level triggered.
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 above 24 MHz. The value of R and C1,C2 may
need some adjustment while running at lower gain.
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.
W78E365 Special Function Registers (SFRs) and Reset Values
F8
FF
F0
+B
00000000
CHPENR
00000000
F7
E8
EF
E0
+ACC
00000000
+P4
xxxx1111
+PSW
00000000
+T2CON
00000000
XICON
00000000
+IP
00000000
E7
D8
DF
D0
D7
C8
RCAP2L
00000000
P4CONA
00000000
RCAP2H
00000000
P4CONB
00000000
TL2
00000000
SFRAL
00000000
TH2
00000000
SFRAH
00000000
CF
C0
SFRFD
00000000
SFRCN
00000000
CHPCON
0xx00000
C7
B8
BF
相關(guān)PDF資料
PDF描述
W78E51P-16 8-BIT MICROCONTROLLER
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W78E51P-33 8-BIT MICROCONTROLLER
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W78E51-24 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller
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