HD6433044 Datasheet, PDF (625/867 Pages) Hitachi Semiconductor – Hitachi Single-Chip Microcomputer

18.9.3 Operation in PROM Mode
The program/erase/verify specifications in PROM mode are the same as for the standard
HN28F101 flash memory. Table 18-20 indicates how to select the various operating modes. The
H8/3048F does not have a device recognition code, so the programmer cannot read the device
name automatically.
Table 18-20 Operating Mode Selection in PROM Mode
Pins
Mode
Read
Read
Output
disable
V_PP V_CC CE OE WE I/O₇ to I/O₀
A₁₆ to A₀
V_CC
V_CC
L
L
H
Data output
Address input
V_CC
V_CC
L
H
H
High impedance
Standby V_CC V_CC H
X
X
High impedance
Command Read
V_PP
V_CC
L
L
H
Data output
write
Output
V_PP
V_CC
L
H
H
High impedance
disable
Standby V_PP V_CC H
X
X
High impedance
Write
V_PP
V_CC
L
H
L
Data input
Legend
L: Low level
H: High level
V_PP: V_PP level
V_CC: V_CC level
X: Don’t care
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