參數(shù)資料
型號(hào): PEF2426
英文描述: Analog IC
中文描述: 模擬IC
文件頁數(shù): 21/73頁
文件大?。?/td> 1618K
代理商: PEF2426
PEB 2466
PEF 2466
Operational Description
Hardware Reference Manual
12
2001-02-20
4
Operational Description
Each channel of the SICOFI
4-μC can be in one of two stable states:
Standby
and
Operating
. These states can be switched by programming Bit 0 (PU) in the
channel-specific configuration register CR1.
Standby
is a power-saving state. Keeping
all unused channels in this state reduces the overall system power dissipation. The third
state,
Reset
, is transient and is reached after applying power to the device (Power On),
after asserting a logic low signal to the RESET#-pin (HW-Reset), or after issuing an XOP
command with Bit 7 (RST) set to
1
(SW-Reset). All four channels would be affected in
any case.
4.1
Operating States
Figure 5
SICOFI
4-μC State Diagram
4.1.1
All input pins must be at GND level before applying VDD to the SICOFI
4-μC. Otherwise,
the device may not enter the Reset State. In this case, the SICOFI
4-μC can be reset by
HW- or SW-Reset, or can be initialized by setting all registers to zero.
Power On
4.1.2
Hardware Reset
Voltage levels lower than 1.2 V applied to pin 23 (RESET#) for more than 3 μs will reset
the SICOFI
4-μC. Spikes that are shorter than 1 μs will be ignored. When RESET# is
released the SICOFI
4-μC will enter Standby State.
2466_206
Operating
Ch.2
Standby
Ch.2
P
P
Operating
Ch.3
Standby
Ch.3
P
P
Operating
Ch.4
Standby
Ch.4
P
P
Operating
Ch.1
Standby
Ch.1
P
P
Reset
(all channels)
Power-On
HW-Reset
SW-Reset
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