tmp88ps42ng TOSHIBA Semiconductor CORPORATION, tmp88ps42ng Datasheet - Page 212

• Manufacturer Part Number: tmp88ps42ng
• Description: 8 Bit Microcontroller Tlcs-870/x Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

18. OTP operation
18.1 Operating mode
18.1.2.1 Programming Flowchart (High-speed program writing)
pin when the Vcc = 6.25 V. After the address and data are fixed, the data in the address is written by
applying 0.1[msec] of low level program pulse to
If the programmed data is incorrect, another 0.1[msec] pulse is applied to
procedure is repeated until correct data is read from the address (maximum of 25 times).
Subsequently, all data are programmed in all address. When all data were written, verfy all address under
the condition Vcc=Vpp=5V.
The high-speed programming mode is set by applying Vpp=12.75V (programming voltage) to the Vpp
Address = Address + 1
Figure 18-3 Programming Flowchart
Error
No
Address = Start address
Program 0.1 ms pulse
Last address ?
V
V
PP
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CC
V
V
N = N + 1
N = 25?
all data
CC
PP
Verify
Read
Pass
= 12.75 V
N = 0
Start
= 6.25 V
= 5 V
= 5 V
No
OK
Yes
OK
PGM
Yes
pin. Then verify if the data is written.
Error
PGM
Fail
pin. This programming
TMP88PS42NG