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NEC
S E R IA L I/O C A L E N D A R & C LO C K C M O S LS I
uPD4990A
DESCRIPTION
The ¿xPD4990AC, ¿tPD4990AG are a CMOS LS I c h ip developed to in p u t/o u tp u t calendar c lo c k deta seri a
