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3.3 Operating Modes
The V850ES/KE1+ has the following operating modes.
(1) Normal operating mode
After the system has been released from the reset state, the pins related to the bus interface are set to the port
mode, execution branches to the reset entry address of the internal ROM, and instruction processing is started.
(2) Flash memory programming mode
This mode is valid only in flash memory versions (
When this mode is specified, the internal flash memory can be programmed by using a flash programmer.
(a) Specifying operating mode
The operating mode is specified according to the status (input level) of the FLMD0 and FLMD1 pins.
In the normal operating mode, input a low level to the FLMD0 pin during the reset period.
A high level is input to the FLMD0 pin by the flash programmer in the flash memory programming mode if
a flash programmer is connected. In the self-programming mode, input a high level to this pin from an
external circuit.
Fix the specification of these pins in the application system and do not change the setting of these pins
during operation.
FLMD0
L
H
H
Remark H: High level
L: Low level
×: don't care
CHAPTER 3 CPU FUNCTIONS
μ
FLMD1
×
Normal operating mode
L
Flash memory programming mode
H
Setting prohibited
User's Manual U16896EJ2V0UD
PD70F3302 and 70F3302Y).
Operating Mode
49
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