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參數資料
| 型號： | TMP90PM36 |
| 廠商： | Toshiba Corporation |
| 英文描述： | A System Evaluation LSI With 8-Bit CPU,One-Time PROM(32968 x 8-Bit),RAM(1024 x 8-Bit)(系統(tǒng)評估大規(guī)模集成電路（集成8位CPU，一次可編程ROM(32968 x 8位),RAM(1024 x 8位)) |
| 中文描述： | 一個系統(tǒng)評價芯片與8位CPU，一次性可編程（32968 × 8位），內存（1024 × 8位）（系統(tǒng)評估大規(guī)模集成電路（集成8位的CPU，一次可編程ROM更新（32968 x 8位），內存（1024 × 8位）） |
| 文件頁數： | 12/22頁 |
| 文件大?。?/td> | 949K |
| 代理商： | TMP90PM36 |
12/22
TOSHIBA CORPORATION
TMP90PM36
(2)
Programming Flow Chart
The programming mode is set by applying 12.75V
(programming voltage) to the VPP pin when the follow-
ing pins are set as follows.
(VCC: 6.25V)
(RESET: “L” level)
(CLK: “L” level)
*These conditions can be obtained
by using adapter socket.
After the address and data have been fixed, a data on
the Data Bus is programmed when the PGM pin is set
to “Low” (0.1ms plus is required).
General programming procedure of an EPROM pro-
grammer is as follows.
Write data to a specified address for 0.1ms.
Verify the data. If the read-out data does not match
the expected data, another writing is performed until
the correct data is written (Max. 25 times).
Then, verify the data and increment the address.
The verification for all data is done under the condition
of V
PP
= V
CC
= 5V after all data were written.
Figure 3.3 shows the programming flowchart.
(3)
The Security Bit
The TMP90PM36 has the Security Bit in PROM cell. If
the Security Bit is programmed to “0”, the content of
the PROM is disable to read in PROM mode.
How to program the Security Bit
In the PROM Mode
(1) Connect P40 pin to V
CC
(2) Set A0 ~ A16 to “0” respectively
(3) Set the 8-bit data to “FE
H
”
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