IA186EM_04 Datasheet, PDF (70/133 Pages) InnovASIC, Inc – 8/16-Bit Microcontrollers

IA186EM/IA188EM
8/16-BIT Microcontrollers
Data Sheet
As of Production Version -03
x2 – Crystal Input (input)
This pin and x1 are the connections for a fundamental mode or third-overtone, parallel-resonant crystal
used by the internal oscillator circuit. An external clock source for the microcontroller is connected to x1
while the x2 pin is left unconnected.
Pins Used by Emulators
The following pins are used by emulators:
a19-a0
ao15-ao8
ad7-ad0
ale
bhe_n/aden_n (on the AI186EM)
clkouta
rfsh2_n/aden_n (on the AI188EM)
rd_n
s2_n-s0_n
s6/lock_n/clkdiv2_n
uzi_n
Emulators require that s6/lock_n/clkdiv2_n and uzi_n be configured as their normal functions, i.e. as s6
and uzi_n respectively. Holding bhe_n/aden_n (AI186EM) or rfsh_n/aden_n (AI188EM) low during
the rising edge of res_n, s6 and uzi_n will be configured in their normal functions instead of as PIOs, at
reset.
3737 Princeton NE, Ste 130 • Albuquerque, NM 87107 • Tel [phone] • Fax [phone] • www.Innovasic.com