M-V850E-IA4 Renesas Electronics America, M-V850E-IA4 Datasheet - Page 693

• Manufacturer Part Number: M-V850E-IA4
• Description: KIT EVAL V850E IA4 UPD70F3186
• Manufacturer: Renesas Electronics America

Specifications of M-V850E-IA4

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

17.3.7 Maskable interrupt status flag (ID)
disabling of interrupt requests. The ID flag is allocated to the PSW.
The ID flag controls the maskable interrupt’s operating state, and stores control information regarding enabling or
This flag is set to 00000020H after reset.
Note Interrupt disable flag (ID) function
After rest: 00000020H
PSW
ID is set (1) by the DI instruction and cleared (0) by the EI instruction. Its value is also modified by the
RETI instruction or LDSR instruction when referencing the PSW.
Non-maskable interrupt signals and exceptions are acknowledged regardless of this flag.
maskable interrupt signal is acknowledged, the ID flag is automatically set (1) by hardware.
An interrupt request signal generated during the acknowledgment disabled period (ID flag = 1) can be
acknowledged when the xxICn.xxIFn bit is set (1), and the ID flag is cleared (0).
ID
0
1
CHAPTER 17 INTERRUPT/EXCEPTION PROCESSING FUNCTION
Maskable interrupt request signal acknowledgment enabled
Maskable interrupt request signal acknowledgment disabled (pending)
0
User’s Manual U16543EJ4V0UD
Maskable interrupt servicing specification
NP EP
ID SAT CY OV
Note
S
When a
Z
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