For the HT48XA0-1/2 MCU devices, are their any differences in operation between the Mask devices and OTP devices?
Answer For the HT48RA0-1/2 OTP devices, if the PC0/REM pin is to be configured as a standard I/O then some care has to be exercised. For the OTP devices, irrespective of the configuration option selection, after power on the PC0 line will default to a REM output and will remain low for a period of 50~80ms, until the configuration option data is read. After the configuration options have been read the PC0 output will default to a high level. As a result a low pulse will be generated on the PC0 pin. For the HT48CA0-1/2 Mask devices, after power on, the PC0 line will go immediately high. This is because the Mask devices do not need to read the configuration option data and therefore do not have the delay after power on associated with the OTP devices.
Related Questions
- There is no counterpart OTP MCU for HTG2130 and HTG2160 Mask Type MCU, how to develop and verify the applications?
- For the HT48XA0-1/2 MCU devices, are their any differences in operation between the Mask devices and OTP devices?
- What are the differences when using the I/Os on the HT48XA0-2, HT48XA0-1 and HT48XA1, HT48XA3, HT48XA5 devices?
