ht82k95ee Holtek Semiconductor Inc., ht82k95ee Datasheet - Page 17

• Manufacturer Part Number: ht82k95ee
• Description: Ht82k95ee/ht82k95ae -- Usb Multimedia Keyboard Encoder 8-bit Mcu
• Manufacturer: Holtek Semiconductor Inc.

Low Voltage Reset - LVR
The microcontroller contains a low voltage reset circuit
in order to monitor the supply voltage of the device. If the
supply voltage of the device drops to within a range of
0.9V~V
tery, the LVR will automatically reset the device inter-
nally.
The LVR includes the following specifications:
Note:
Rev. 1.20
For a valid LVR signal, a low voltage i.e. a voltage in
the range between 0.9V~V
than 1ms. If the low voltage state does not exceed
1ms, the LVR will ignore it and do not perform a reset
function.
The LVR uses the OR function with the external
RES signal to perform chip reset.
LVR
*1. To make sure that the system oscillator has stabilized, the SST provides an extra delay of 1024 system
*2. Since low voltage has to be maintained for over 1ms in its original state, therefore there s a 1ms delay
such as might occur when changing the bat-
before entering the reset mode
clock pulses before entering the normal operation.
LVR
must exist for greater
Low Voltage Reset
17
The relationship between V
Note:
V
tion at 4MHz system clock.
OPR
is the voltage range for proper chip opera-
HT82K95EE/HT82K95AE
DD
and V
LVR
August 28, 2006
is shown below.