參數(shù)資料
型號(hào)： MB90F357TE
廠商： Fujitsu Limited
英文描述： 16-bit Proprietary Microcontrollers
中文描述： 16位微控制器專有
文件頁數(shù)： 26/85頁
文件大?。?/td> 880K
代理商： MB90F357TE
MB90350E Series
26
12. Stabilization of power supply voltage
A sudden change in the power supply voltage may cause the device to malfunction even within the specified
power supply voltage V
CC
operating range. Therefore, the power supply voltage V
CC
should be stabilized.
For reference, the power supply voltage should be controlled so that V
CC
ripple variations (peak-to-peak value)
at commercial frequencies (50 Hz/60 Hz) fall below 10
%
of the standard power supply voltage V
CC
and the
coefficient of fluctuation does not exceed 0.1 V/ms at instantaneous power switching.
13. Initialization
In the device, there are internal registers which are initialized only by a power-on reset. To initialize these
registers, turn on the power again.
14. Port 0 to port 3 output during power-on (External-bus mode)
As shown below, when power is turned on in external-bus mode, there is a possibility that output signal of
Port 0 to Port 3 might be unstable regardless of reset inputs.
15. Setting using CAN function
To use CAN function, please set “1” to DIRECT bit of CAN direct mode register (CDMR).
If DIRECT bit is set to “0” (initial value), wait states will be performed when accessing CAN registers.
Note : Please refer to section “23.12 CAN Direct Mode Register” in Hardware Manual of MB90350E series for detail
of CAN direct mode register.
16. Flash security function
The security byte is located in the area of the Flash memory. If protection code 01
H
is written in the security byte,
the Flash memory is in the protected state by security.
Therefore please do not write 01
H
in this address if you do not use the security function.
Please refer to following table for the address of the security byte.
17. Operation with T
A
=
+
105
°
C or more
If used exceeding T
A
=
+
105
°
C, please contact Fujitsu sales representatives for reliability limitations.
Product name
Flash memory size
Address for security bit
MB90F352E(S)
MB90F352TE(S)
MB90F357E(S)
MB90F357TE(S)
Embedded 1 Mbit Flash memory
FE0001
H
Port 0 to Port
3
Port 0 to Port
3
o
u
tp
u
t
s
might
b
e
u
n
s
t
ab
le.
Port 0 to Port
3
o
u
tp
u
t
s
= Hi-Z
V
CC
1/2 V
CC
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