HD64F3437TFI16V Renesas Electronics America, HD64F3437TFI16V Datasheet - Page 119

• Manufacturer Part Number: HD64F3437TFI16V
• Description: MCU FLASH 60K 100-TQFP
• Manufacturer: Renesas Electronics America

Specifications of HD64F3437TFI16V

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Pin Wait Mode: In all accesses to external addresses, the number of wait states (T
bits WC1 and WC0 are inserted. If the WAIT pin is low at the fall of the system clock (ø) in the
last of these wait states, an additional wait state is inserted. If the WAIT pin remains low, wait
states continue to be inserted until the WAIT signal goes high.
Pin wait mode is useful for inserting four or more wait states, or for inserting different numbers of
wait states for different external devices.
Figure 5.3 shows the timing when the wait count is 1 (WC1 = 0, WC0 = 1) and one additional wait
state is inserted by WAIT input.
Read
access
Write
access
Note:
*
Arrows indicate time of sampling of the
ø
WAIT
Address bus
AS
RD
Data bus
WR
Data bus
pin
T
1
Figure 5.3 Pin Wait Mode
T
WAIT
2
pin.
External address
Inserted by
wait count
Write data
Write data
T
W
*
Inserted by
WAIT
T
W
signal
*
Read data
W
T
) selected by
3
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