MB90330A Series
86
Standard configuration for Fujitsu standard serial on-board writing
The flash microcontroller programmer (AF220/AF210/AF120/AF110) made by Yokogawa Digital Computer Cor-
poration is used for Fujitsu standard serial on-board writing.
Note : Inquire of Yokogawa Digital Computer Corporation for details about the functions and operations of the
AF220, AF210, AF120 and AF110 flash microcontroller programmer, general-purpose common cable for
connection (AZ210) and connectors.
Pins Used for Fujitsu Standard Serial On-board Programming
Pin
Function
Description
MD2,
MD1, MD0
Mode input pins
The device enters the serial program mode by setting MD2=1, MD1=1
and MD0 =0.
X0, X1
Oscillation pins
Because the internal CPU operation clock is set to be the 1 multiplication
PLL clock in the serial write mode, the internal operation clock frequency
is the same as the oscillation clock frequency.
P60, P61
Programming program
start pins
Input a Low level to P60 and a High level to P61.
RST
Reset input pin
SIN0
Serial data input pins.
UART0 is used as CLK synchronous mode.
In program mode, the pins used for the UART0 CLK synchronous mode
are SIN0, SOT0 and SCK0.
SOT0
Serial data output pin
SCK0
Serial clock input pin
VCC
Power source input pin
When supplying the write voltage (MB90F334A : 3.3 V
± 0.3 V) from the
user system, connection with the flash microcontroller programmer is not
necessary.
When connecting, do not short-circuit with the user power supply.
VSS
GND Pin
Share GND with the flash microcontroller programmer.
Host interface cable (AZ201)
General-purpose common cable (AZ210)
CLK synchronous
serial
MB90F334A
user system
RS232C
Can operate stand alone
Flash
microcontroller
programmer
+
Memory card