Fujitsu MB90390 Series Hardware Manual page 621

Table 29.1-1 Pins Used for Fujitsu Standard Serial Onboard Programming
Pin
MD2, MD1
Mode pins
MD0
X0, X1 Oscillation pins
P00, P01 programming activation pins
RST Reset pin
SIN4 Serial data input pin
SOT4 Serial data output pin
SCK4 Serial clock signal input pin
C C pin
V
Power voltage supply pin
CC
V
GND pin
SS
Even if the P00, P01, SIN4, SOT4, and SCK4 pins are used for the user system, the control circuit shown in
the figure below is required. The /TICS signal of the flash microcontroller programmer can be used to
disconnect the user circuit during serial programming.
Section "29.2 Example of Serial Programming Connection" present examples the following four types of
serial programming connection. See each Section as required.
• Serial programming connection (user power supply used)
• Serial programming connection (power supplied from the programmer)
• Minimum connection to the flash microcontroller programmer (user power supply used)
• Minimum connection to the flash microcontroller programmer (power supplied from the programmer)
CHAPTER 29 EXAMPLES OF SERIAL PROGRAMMING CONNECTION
Function
Controls programming mode from the flash microcontroller
programmer.
In programming mode, the CPU internal operation clock signal is
one multiple of the PLL clock signal frequency. Therefore, because
the oscillation clock frequency becomes the internal operation clock
signal, the oscillator used for serial reprogramming is 3 MHz to 20
MHz.
Input a low level to P00 and a High level to P01.
Serial input-output is used.
This external capacitor pin is used to stabilize the power supply.
Connect a ceramic capacitor of approximately 0.1μF to the outside.
Programming voltage (5 V±10%)
Common to the ground of the flash microcontroller programmer.
Additional information
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