Freescale Semiconductor PE Micro Cyclone Pro, Руководство пользователя

Страница: 122 / 158

116 Cyclone PRO User Manual
CYCLONE PRO
13.7 68HC908EY
Figure 13-7: 68HC908EY Family MON08 Pinout
The target GND is connected to the Pin 2 of the target MON08 Header.
The target RESET line is directly connected to the Pin 4 of the target MON08
Header.
The target IRQ line is directly connected to the Pin 6 of the target MON08
Header.
PORTA0 from the target processor is connected to the target MON08 Header
Pin 10, acting as the communications line. The Cyclone PRO pulls up this
signal with a 10K Ohm resistor to the target VDD.
PORTA1, PORTB3, PORTB4 and PORTB5 are used for entering monitor
mode. By default the user may directly bring these signals out to the target
MON08 Header.
An external clock signal must be provided to the target MCU’s OSC pin. The
Cyclone PRO provides this signal to MON08 header Pin 13.
Alternatively, the user may pull down PORTA1 and PORTB3, and pull up
PORTB4, and pull up/down PORTB5 for clock division. In which case the user
does not need to connect these signals to the target MON08 Header.