3. Differences in S-Mask Model
Table 2 shows the differences between the H8/3437F (dual-power-supply specification) and
H8/3437SF (single-power-supply specification).
Table 2 Differences between H8/3437F and H8/3437F S-Mask Model
Dual-Power-Supply Model:
H8/3437F
Single-Power-Supply Model:
H8/3437F S-Mask Model
Item
Program/
erase voltage
12 V must be applied from off-chip
VPP (12.0 V ±0.6 V)
12 V application not required
VCC single-power-supply programming
VCC (5.0 V ±10%)
FVPP (FWE)
pin function
Dual function as FVPP power supply
and STBY function
No programming control pin
Programming
modes
(See section 21 for the use of these
modes)
•
•
Writer mode
On-board
Boot mode
User programming mode
Operating
modes allowing
on-board
(See section 21 for the use of these
modes)
•
•
•
Writer mode
Boot mode
User programming mode
programming
On-board
programming
unit
1-byte-unit programming
32-byte-unit programming
Programming
with PROM
programmer
Select Hitachi stand-alone flash
memory HN28F101 setting
Special programming mode setting
required. Use of PROM programmer
that supports Hitachi microcomputer
device types with 64-kbyte on-chip flash
memory. (128-byte-unit fast page
programming)
Boot mode
setting
method
Reset release after MD1 = FVPP/STBY =
12 V application
Pin
MD1 MD0 P92 P91 P90
Setting level
0
0
1
1
1
Reset release after above pin settings
Control bits set by software
User program
mode setting
method
FVPP = 12 V application
HITACHI [ HITACHI SEMICONDUCTOR ]
