參數(shù)資料
型號： HE8P480(S)
文件頁數(shù)： 49/50頁
文件大小： 553K
代理商： HE8P480(S)
KING BILLION ELECTRONICS CO., LTD
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HE8P480
HE80000 SERIES
M. OTP Programming
49
V1.14
User can use the EZ_writer to program the HE8P480 OTP ROM through the programming pins which are
shared with I/O PRTD and the functions are descript as below.
Pin Name
VPP
LOADER
PRTD7/SDO
PRTD6/SDI
PRTD5/SCK
PRTD4/D_Cn I/O port / WAKEUP /D_Cn: data or command
PRTD3/R_Wn
I/O port / WAKEUP /R_Wn: Read or Write
PRTD2/P_Sn
I/O port / WAKEUP /P_Sn: Parallel or Series
Function
Apply 12V to write the OTP ROM, and 5V to normal operation
Used to program the OTP ROM
I/O port / WAKEUP / INT/ SDO: Series Data Output
I/O port / WAKEUP / INT/ SDI: Series Data Input
I/O port / WAKEUP / SCK: Series Clock
N. Application Note
When the HE8P480 is used to emulate the HE83R141 and HE83R142, the power consumption of
HE8P480 will have about 100uA larger than the mask type HE83R141 and HE83R142 if the LCD display
is turned on and the 1/5 bias + regulator are set in the mask option of HE8P480.
The HE8P480 can operate on 4MHz correctly only when the power supply is above 2.5V. and the mask
type chip don’t have this problem.
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