HD64F3437TF16 Datasheet, PDF (83/752 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.

Bus cycle
T₁ state
T₂ state
T₃ state
ø
Address bus
Address
AS: High
RD: High
WR: High
Data bus:
high impedance state
Figure 2.16 Pin States during On-Chip Register Field Access Cycle
Read cycle
T₁ state
T₂ state
T₃ state
ø
Address bus
Address
AS
RD
WR: High
Data bus
Read data
Figure 2.17 (a) External Device Access Timing (Read)
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