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Internal Flash Memory
16-6
Table 16-5-2 lists the functions of the external pins in flash memory mode.
Table 16-5-2 Pin Functions
When first applying power, it is necessary to input a signal that is low for at least 1 ms to the reset pin NROMRST.
Pin Name Input/Output
Description
PA[17:1] Input Address
PD[15:0] Input/Output Data
NCE
Chip enable
MODE
Mode
NOE
Output enable
NWE
Write enable
E
Erase enable
FROM
Flash memory/microcontroller mode switch
TEST[3:0] Test signal * Input x'0.
NROMRST
Reset
VDD
Power supply
VPP
Power supply
VSS
Power supply
Input
Input
Input
Input
Input
Input
Input
Input