AN2690 Freescale Semiconductor / Motorola, AN2690 Datasheet - Page 15

• Manufacturer Part Number: AN2690
• Description: Low Frequency EEPROM Emulation on the MC68HLC908QY4
• Manufacturer: Freescale Semiconductor / Motorola

MOTOROLA
Low Frequency EEPROM Emulation on the MC68HLC908QY4
Wait for RST
(STOP Inst)
Force IIOP
Enable Switch
Freescale Semiconductor, Inc.
For More Information On This Product,
Figure 7. Main Flow (Part 2)
Go to: www.freescale.com
Y
N
Restore LED pattern to
Set PROG_EEPROM
Reset DebounceCount
DISABLE_LED_FLAG
N
Dec DebounceCount
N
Valid Switch Press
Disable Switch
ProgEeprom?
Disable LED?
SystemTick?
Restore LED
Pressed?
Enabled?
Count=0?
(PTB=0)
Pattern?
Switch
Switch
PortB
Clear
Y
N
Y
Y
Y
N
Y
N
Y
N
DISABLE_LED_FLAG
Disable LEDs
SYSTEM_TICK_FLAG
UPDATE_LED_TICK
Disabled?
LED'S
Update LED?
UpdateLED()
Set
LED Update
Enabled?
N
Clear
Clear
Y
Y
Y
N
N
Appendix A: Sample Application
AN2690
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