
CHAPTER 3 CPU FUNCTION
User’s Manual U15905EJ2V1UD
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3.3
Operation Modes
The V850ES/SA2 and V850ES/SA3 have the following operation modes.
(1) Single-chip mode
In this mode, each pin related to the bus interface is set to the port mode after system reset has been released.
Execution branches to the reset entry address of the internal ROM, and then instruction processing is started.
By setting the PMCDH, PMCDL, PMCCM, PMCCS, and PMCCT registers to the control mode by software, an
external device can be connected to the external memory area.
(2) Flash memory programming mode (
PD70F3201, 70F3201Y, 70F3204, and 70F3204Y)
In this mode, the internal flash memory can be programmed by using a flash programmer.