upd4704 Renesas Electronics Corporation., upd4704 Datasheet - Page 8

• Manufacturer Part Number: upd4704
• Description: Extension 8-bit Up/down Counter Cmos Integrated Circuits
• Manufacturer: Renesas Electronics Corporation.

PD4704
AC Timings
Fig. 1 Up/Down Signal Input Timing
t
CYCT
t
t
PWUDL
PWUDH
UP/DOWN
t
CYCT
t
SUDM
t
t
PWUDL
PWUDH
Fig. 2 Count Data Output Timing
t
t
PWRS
SRSUD
RESET
UP/DOWN
t
t
DRSCD
DUDCD
Hi-Z
Hi-Z
CD
–CD
0
7
t
t
DOECD
FOECD
OE
t
t
DSTBCD
DSTBCD
t
SUDSTB1
STB
Fig. 3 Carry/Borrow Signal Output Timing
t
t
DUDCB1
DUDCB2
UP/DOWN
t
PWCB
Carry
t
t
DUDCB1
DUDCB2
t
PWCB
Borrow
Fig. 4 Strobe Signal Output Timing
t
t
SUDSTB1
SUDSTB2
UP/DOWN
STB
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