Fujitsu F2MC-16LX Hardware Manual page 605

Pins Used for Fujitsu Standard Serial On-board Programming
Table 26.1-1 shows the function of pins used for Fujitsu standard serial on-board programming.
Table 26.1-1 Function of Used Pins
Pin
MD2,MD1,MD0 Mode Pin
X0,X1 Oscillation pins
Writing program
P60,P61
activating pins
RST Reset
SIN0 Serial data input
SOT0 Serial data output
SCK0 Serial clock input
V
Supply voltage
CC
V
GND
SS
AF220/AF210/AF120/AF110
AF220/AF210/AF120/AF110
Notes:
• When the P60, P61, SIN0, SOT0, or SCK0 pin is used also in a user system, the control circuit
shown in Figure 26.1-2 is required.
• During serial write, the user circuit can be disconnected using the /TICS signal from the flash
microcontroller programmer. Please refer to "26.4 Example of Connecting Serial Writing".
Function
Setting MD2=1, MD1=1, and MD0=0 allows the mode to be in the serial write
mode.
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. When you perform the serial write, the
frequency you can input into the high-speed oscillation input terminal is fixed to
6 MHz.
Input a Low level to P60 and a "H" level to P61.
-
UART0 is used as CLK synchronous mode.
When you supply the write voltage (V
you need not connect with flash microcomputer programmer.
GND pin is common to the ground of the flash microcontroller programmer.
Figure 26.1-2 Pin Control Circuit
Write control pin
/TICS pin
CHAPTER 26 EXAMPLE of CONNECTING SERIAL WRITING
Supplementary Information
10 kΩ
User
=3.3 V ± 0.3 V) from the user system,
CC
MB90F334A
Write control pin
589