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參數(shù)資料
| 型號： | M37517F8HP |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, FLASH, 4 MHz, MICROCONTROLLER, PQFP48 |
| 封裝： | 7 X 7 MM, 0.50 MM PITCH, PLASTIC, LQFP-48 |
| 文件頁數(shù)： | 68/98頁 |
| 文件大小： | 886K |
| 代理商： | M37517F8HP |
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Rev.1.01
Aug 02, 2004
page 70 of 96
7517 Group
(3) Standard serial I/O Mode
The standard serial I/O mode inputs and outputs the software
commands, addresses and data needed to operate (read, pro-
gram, erase, etc.) the internal flash memory. This I/O is clock
synchronized serial. This mode requires the exclusive external
equipment (serial programmer).
The standard serial I/O mode is different from the parallel I/O
mode in that the CPU controls flash memory rewrite (uses the
CPU rewrite mode), rewrite data input and so forth. The standard
serial I/O mode is started by connecting “H” to the P26 (SCLK) pin
and “H” to the P41 (INT0) pin and “H” to the CNVSS pin (apply 4.5
V to 5.5 V to Vpp from an external source), and releasing the re-
set operation. (In the ordinary microcomputer mode, set CNVss
pin to “L” level.)
This control program is written in the Boot ROM area when the
product is shipped from Renesas. Accordingly, make note of the
fact that the standard serial I/O mode cannot be used if the Boot
ROM area is rewritten in parallel I/O mode. Figure T-9 shows the
pin connection for the standard serial I/O mode.
In standard serial I/O mode, serial data I/O uses the four serial I/O
pins SCLK, RxD, TxD and SRDY1 (BUSY). The SCLK1 pin is the
transfer clock input pin through which an external transfer clock is
input. The TxD pin is for CMOS output. The SRDY1 (BUSY) pin
outputs “L” level when ready for reception and “H” level when re-
ception starts.
Serial data I/O is transferred serially in 8-bit units.
In standard serial I/O mode, only the User ROM area shown in
Figure 64 can be rewritten. The Boot ROM area cannot.
In standard serial I/O mode, a 7-byte ID code is used. When there
is data in the flash memory, commands sent from the peripheral
unit (programmer) are not accepted unless the ID code matches.
Outline Performance
(Standard Serial I/O Mode)
In standard serial I/O mode, software commands, addresses and
data are input and output between the MCU and peripheral units
(serial programmer, etc.) using 4-wire clock-synchronized serial I/
O (serial I/O1).
In reception, software commands, addresses and program data
are synchronized with the rise of the transfer clock that is input to
the SCLK pin, and are then input to the MCU via the RxD pin. In
transmission, the read data and status are synchronized with the
fall of the transfer clock, and output from the TxD pin.
The TxD pin is for CMOS output. Transfer is in 8-bit units with LSB
first.
When busy, such as during transmission, reception, erasing or
program execution, the SRDY1 (BUSY) pin is “H” level. Accord-
ingly, always start the next transfer after the SRDY1 (BUSY) pin is
“L” level.
Also, data and status registers in a memory can be read after in-
putting software commands. Status, such as the operating state of
the flash memory or whether a program or erase operation ended
successfully or not, can be checked by reading the status register.
Here following explains software commands, status registers, etc.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M37530T-PTC | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Converter for Connecting 42-pin 1.778mm-pitch SDIP to a 40-pin Narrow-pitch Connector (for 7531, 7540, 7542 and 7544 Groups) |
| M37530T-PTCB | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:Converter for Connecting 40-pin Narrow-pitch Connector to 32-pin 0.8mm-pitch LQFP (for 7531, 7532, 7534, 7540, 7542 and 7544 Groups) |
| M37530T-PTCC | 功能描述:DEV 42-PIN RSS/MCU TO 32-PIN 1.7 RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 配件 系列:- 標準包裝:1 系列:- 附件類型:適配器板 適用于相關(guān)產(chǎn)品:RCB230，RCB231，RCB212 配用:26790D-ND - RCB BREAKOUT BOARD RS232 CABLE |
| M37531E4FP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M37531E4FP#U0 | 制造商:Renesas Electronics Corporation 功能描述:MITSUBISHI 8 BIT OTP MCU |
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