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| GMS81508A Datasheet, PDF (85/91 Pages) Hynix Semiconductor – USERS MANUAL | |||
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GMS81516AT EPROM PROGRAMMING
HYUNDAI MicroElectronics
PIN FUNCTION (OTP Mode)
VPP (Program Voltage)
VPP is the input for the program voltage for programming the EPROM.
CE ( Chip Enable)
CE is the input for programming and verifying internal EPROM.
OE (Output Enable)
OE is the input of data output control signal for verify.
A0~A15 (Address Bus)
A0~A15 are address input pins for internal EPROM.
O0~O7 (EPROM Data Bus)
These are data bus for internal EPROM.
PROGRAMMING
The GMS81516AT has address A0~A15 pins. Therefore, the programmer just program the data (from 4000H to
7FFFH) into the GMS81516AT OTP device, during addresses A14,A15 must be pulled to a logic high.
When the programmer write the data from 4000H to 7FFFH, consequently, the data actually will be written into
addresses C000H to FFFFHof the OTP device.
1. The data format to be programmed is made up of Motorola S1 format.
Ex) "Motorola S1" format;
S0080000574154434880
S1244000E1FF3BFF04A13F8F06E101711B821B1BE01D1B3B191BF6181BF01C1BFF081BFF0AE0
S12440211BF5091BFF0B1BFF3F1B003E1B003D1B003C1BFF3B1B003A1BFF391BFF381BFF353D
:
:
S1057FF2983FB2
S1057FFEFF3F3F
S9030000FC
2. Down load above data into programmer from PC.
3. Programming the data from address 4000H to 7FFFH into the OTP MCU, the data must be turned over
respectively, and then record the data. When read the data, it also must be turned over.
Ex) 00(00000000)âFF(11111111), 76(01110110)â89(10001001), FF(11111111)â00(00000000) etc.
4. Of course, the check sum is result of the sum of whole data from address 4000H to 7FFFH in the file (not reverse
data of OTP MCU).
* When GMS81516AT shipped, the blank data of GMS81516AT is initially 00H (not FFH).
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