HT45R34 Holtek Semiconductor, HT45R34 Datasheet - Page 19

• Manufacturer Part Number: HT45R34
• Description: C/R to F Type 8-Bit OTP MCU
• Manufacturer: Holtek Semiconductor

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The relationship between V
Note:
Note:
Options
The following table shows the various options within the microcontroller. All of the options must be defined to ensure
proper system functioning.
Rev. 1.20
No.
1
2
3
4
5
6
7
8
9
V
*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 its original state for longer than t
OPR
Wake up PA0~PA7 (bit option)
Pull high PA0~PA7 (bit option)
WDT clock source
WDT
CLRWDT
LVR
OSC
INT0 trigger edge
INT1 trigger edge
clock pulses before starting the normal operation.
the reset mode.
is the voltage range for proper chip operation at 4MHz system clock.
Function
DD
and V
LVR
is shown below.
None wake-up or wake-up
None pull-high or pull-high
WDTOSC or f
Enable or disable
1 or 2 instructions
Enable or disable
X tal mode or RC mode
Disable, rising edge, falling edge or double edge
Disable, rising edge, falling edge or double edge
Low Voltage Reset
19
SYS
/4
Description
LVR
, therefore a t
LVR
October 15, 2007
delay enters
HT45R34