Operation Modes - NEC V850/SB1TM User Manual

3.3 Operation Modes

The V850/SB1 and V850/SB2 have the following operation modes.
(1) Normal operation mode (single-chip mode)
After the system has been released from the reset status, the pins related to the bus interface are set for port
mode, execution branches to the reset entry address of the internal ROM, and instruction processing written in
the internal ROM is started.
memory area is enabled by setting in the memory expansion mode register (MM) by instruction.
(2) Flash memory programming mode
This mode is provided only in the µ PD70F3032A, 70F3032AY, 70F3033A, 70F3033AY, 70F3035A, 70F3035AY,
70F3037A, 70F3037AY. The internal flash memory is programmable or erasable when the V
to the V pin.
PP
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CHAPTER 3 CPU FUNCTIONS
However, external expansion mode that connects external device to external
V
PP
0 Normal operation mode
7.8 V Flash memory programming mode
V Setting prohibited
DD
User's Manual U13850EJ4V0UM
Operation Mode
voltage is applied
PP