upd4704 Renesas Electronics Corporation., upd4704 Datasheet - Page 3

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

TRUTH TABLE 1 (COUNTER BLOCK)
TRUTH TABLE 2 (LATCH & OUTPUT BLOCKS)
STB
UP
H
H
H
H
L
L
L
DOWN
OE
H
H
H
L
L
L
Output disable (3-state)
Output enable
Data through (count value load)
Data latch (count value retention)
RESET
H
H
L
L
L
L
L
L
CD
Carry
0
to CD
H
L
7
Borrow
H
: H or L
L
Reset
Reset
Down-count
Up-count
Disabled (count undefined)
Disabled (count undefined)
Borrow output when count = 00
Carry output when count = 0FF
Remarks
H
H
: H or L
PD4704
3