HT46R02N HOLTEK [Holtek Semiconductor Inc], HT46R02N Datasheet - Page 53

• Manufacturer Part Number: HT46R02N
• Description: Small Package 8-Bit OTP MCU
• Manufacturer: HOLTEK [Holtek Semiconductor Inc]

Configuration Options
Configuration options refer to certain options within the MCU that are programmed into the OTP Program Memory de-
vice during the programming process. During the development process, these options are selected using the HT-IDE
software development tools. As these options are programmed into the device using the hardware programming tools,
once they are selected they cannot be changed later by the application software. All options must be defined for proper
system function, the details of which are shown in the table.
Application Circuits
Rev.1.00
No.
1
2
3
4
5
6
7
8
9
LVR function: enable or disable
Watchdog Timer: enable or disable
Watchdog Timer clock source: LXT, LIRC or f
Note: LXT oscillator must be selected by OSC configuration option if WDT clock source is from LXT.
CLRWDT instructions: 1 or 2 instructions
System oscillator configuration: HXT, HIRC, ERC, HIRC + LXT
LVR voltage: 2.1V, 3.15V or 4.2V
RES or PA7 pin function
SST: 1024 or 2 clocks (determine t
Internal RC: 4MHz, 8MHz or 12MHz
SST
for HIRC/ERC)
53
SYS
Options
/4
HT46R01B/02B/01N/02N
HT48R01B/02B/01N/02N
December 15, 2009