參數(shù)資料
型號(hào): M38037M8H-XXXWG
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8.4 MHz, MICROCONTROLLER, PBGA64
封裝: 6 X 6 MM, 0.65 MM PITCH, PLASTIC, FLGA-64
文件頁(yè)數(shù): 91/111頁(yè)
文件大?。?/td> 1205K
代理商: M38037M8H-XXXWG
Rev.3.02
Nov 05, 2004
page 80 of 108
3803 Group (Spec. H)
PRELIMINARY
Notice: This is not a final specification.
Some parametric limits are subject to change.
q 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 a purpose-specific pe-
ripheral unit.
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 CNVss pin and
“H” to the P45 (BOOTENT) pin, and releasing the reset 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. The standard serial I/
O mode has standard serial I/O mode 1 of the clock synchronous
serial and standard serial I/O mode 2 of the clock asynchronous
serial. Tables 15 and 16 show description of pin function (standard
serial I/O mode). Figures 74 to 77 show the pin connections for
the standard serial I/O mode.
In standard serial I/O mode, only the User ROM area shown in
Figure 64 can be rewritten. The Boot ROM area cannot be written.
In standard serial I/O mode, a 7-byte ID code is used. When there
is data in the flash memory, this function determines whether the
ID code sent from the peripheral unit (programmer) and those writ-
ten in the flash memory match. The commands sent from the
peripheral unit (programmer) are not accepted unless the ID code
matches.
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