Preliminary
HTG1390
Mask options
The following either/or options are available by
mask option which the user must select prior to
manufacture.
• 4-bit input ports PP and PS with or without
pull high resistors
• Each bit of PP and PS can wake up the proc-
essor from a HALT state
• Output Port PA to be CMOS or open drain
NMOS
• 8-bit programmable timer with external clock
or internal frequency source. Thirteen inter-
nal frequency sources are available to provide
an internal clock. Note that a value of n=6
cannot be used for the devices.
• Six kinds of sound clock frequency:
fSYS/2m, m=0, 1, 2, 3, 4, 5
Application Circuits
R*: Depends on the required system clock frequency. (R=36kΩ~2MΩ, at VDD=1.5V)
12
17th Nov ’98