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參數(shù)資料
| 型號(hào)： | TC9447F |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PQFP100 |
| 封裝： | 14 X 20 MM, 0.65 MM PITCH, PLASTIC, QFP-100 |
| 文件頁數(shù)： | 26/44頁 |
| 文件大?。?/td> | 990K |
| 代理商： | TC9447F |
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TC9447F
2002-02-05
32
5.
Cautions on use
(1)
The cautions at the time of using IFOK terminal
The timing which outputs IFOK signal is the signal which shows whether the command received from
the microcomputer was performed normally.
Since the initial value of IFCK signal is unfixed when a control microcomputer is checking IFOK
signal, before sending a command, it may stop performing control from a microcomputer.
(2)
The cautions at the time of using ACMP (address comparing mode)
In rewriting coefficient data and offset data using ACMP mode, please do not use it the following
condition.
(2-1) Please do not transmit the following command before completing rewriting of data.
Please do not send the following command before completing rewriting of data of CRAM or
OFRAM.
Please check that waiting the term after rewriting of data is completed until it transmits the
following command was carried out, or rewriting has been completed using IFOK signal.
(2-2) Please do not include data of an intact address.
Please do not include coefficient data of offset data of an address which are not used by the
program under execution, into transmitting data.
When data of an intact address is contained, operation in ACMP mode cannot be ended.
If the following command is transmitted in this state, RAM data will become unfixed also by the
command with the command unrelated to CRAM or OFRAM.
It needs to reset and all data needs to be re-set up to interrupt before completing rewriting of data
in the rewriting processing.
(2-3) Please do not perform continuation transmission over the 0th address.
The transmission over the 0th address may incorrect-operate.
The same of this restriction is said not only of ACMP mode but continuation transmission of
usual RAM data.
For example, when writing in 007h from 1BFh and 000h from 1B8h of CRAM, it must transmit in
2 steps.
(3)
The following cautions are required when transmitting a reset command and a boot command in the
cautions I2C bus mode at the time of using the I2C bus mode.
(3-1) At the time of reset command use
When transmitting a reset command (4Fh: M-RST) from a microcomputer, the acknowledgement
signal in front of the end conditions outputted from IFDI terminal is not transmitted to a
microcomputer.
Therefore, the acknowledgement signal of the last of IFDI signal should repeal at the time of
reset command transmission.
The timing at the time of reset command transmission is shown if Figure 4.
Figure 4
Timing at the time of command transmission
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