HD64F3437TF16 Datasheet, PDF (9/752 Pages) Hitachi Semiconductor – 12 V must not be applied to the S-mask model (single-power-supply specification), as this may permanently damage the device.

2. Product Type Names and Markings
Table 1 shows examples of product type names and markings for the H8/3437F (dual-power-
supply specification) and H8/3437SF (single-power-supply specification), and the differences in
flash memory programming power supply.
Table 1 Differences in H8/3437F and H8/3437F S-Mask Model Markings
Product type name
Sample markings
Dual-Power-Supply Model:
H8/3437F
HD64F3437F16/TF16
Single-Power-Supply Model:
H8/3437F S-Mask Model
HD64F3437SF16/TF16
H8/3437
8M3
HD
64F3437F16
JAPAN
H8/3437
8M3
HD S
64F3437F16
JAPAN
Flash memory
programming power
supply
V_PP power supply
(12.0 V ±0.6 V)
“S” is printed above the type name
V_CC power supply
(5.0 V ±10%)