168
CHAPTER 7 SETTING A MODE
MB90560 series
7.1
Setting a Mode
The F
2
MC-16LX supports the modes for access method, access areas, and tests. A
mode is determined based on the settings by the mode pin at a reset as well as the
mode data fetched.
I
Mode setting
The F
2
MC-16LX supports the modes for access method, access areas, and tests, classified as
shown in Figure 7.1-1 in this module.
Figure 7.1-1 Mode classification
I
Operating modes
The operating modes control the operating state of the device, and are specified by the mode
setting pin (MDx) and Mx bit contents in mode data. Selecting operating modes enables
normal operation, and the activation of internal test programs and special test functions.
<Check>
Because the MB90560 series is only used in single-chip mode, set MD2, 1, 0 to 011 and set
M1, 0 to 00.
I
Bus mode
The bus mode controls the operation of internal ROM and external access functions, and is
specified by the mode setting pin (MDx) and Mx bit contents in mode data. The mode setting
pin (MDx) specifies bus mode when reset vector and mode data are read. The Mx bit in mode
data specifies bus mode during normal operation.
I
RUN mode
The RUN mode means CPU operating mode. The RUN mode includes main clock mode,
PLL clock mode, and various low power consumption modes. See Chapter 5, "Low Power
Consumption Modes," for details.
<Check>
Because the MB90560 series is only used in single-chip mode, set MD2, 1, 0 to 011 and set
M1, 0 to 00.
Operating mode
Bus mode
Single-chip mode
RUN
EPROM Programming
Modes