Maxim Integrated Ultra-High-Speed Flash Microcontroller - Manual (Page 161)

15-3
PROGRAM EXECUTION
INTERNAL MEMORY DISABLED EA\ =0
INTERNAL MEMORY ENABLED EA\ =1
1
RST = 1
EA = 0
PSEN = 0
POWER-ON
RESET
AUTOBAUD ROUTINE
AWAITING <CR> CHARACTER ON RXD OF SERIAL PORT 0
SERIAL COMMUNICATION WITH THE ROM LOADER CAN
PROCEED AS ESTABLISHED ON SERIAL PORT 0
DEVICE IN RESET
(INTERNAL MEMORY DISABLED)
DEVICE IN RESET
(INTERNAL MEMORY ENABLED)
N
N
N
N Y
Y
Y
Y
Y
N
PSEN
TOGGLED 0
Figure 15-1. Invoking and Exiting the Loader on the Ultra-High-Speed Flash Microcontroller
Ultra-High-Speed Flash
Microcontroller User’s Guide
Maxim Integrated