B.4.7 branching to the user program, B.4.7.1 branching to the reset start routine, B.4.7.2 branching to the interrupt start routine – Lucent Technologies MN10285K User Manual

Page 328

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MN102HF75K Flash EEPROM Version

Using the Onboard Serial Programming Mode

MN102H75K/F75K/85K/F85K LSI User Manual

Panasonic Semiconductor Development Company

327

Panasonic

B.4.7

Branching to the User Program

B.4.7.1 Branching to the Reset Start Routine

When the reset starts, the serial writer load program initializes only if SBD is

low. Otherwise, the program branches to the user program at address x’0x82010’.

B.4.7.2 Branching to the Interrupt Start Routine

In the interrupt start address, place a simple branch instruction pointing to
address x’0x82018’.

Figure B-10 Flow of Branch to Reset Start Routine

Figure B-11 Flow of Branch to Interrupt Start Routine

Serial writer?

Yes

No

Reset start

Start serial writer

load program

Branch to address

x’82010’

Execute user program

(Generate 10-cycle delay)

Interrupt start

address x’0x80008’

Branch to address

x’0x82018’

Execute user interrupt service routine

(Generate 2-cycle delay)

JMP x’82018’ instruction
(3 bytes/2 cycles)

Write a branch instruction
to address x’82018’

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