IA186EM_04 Datasheet, PDF (6/133 Pages) InnovASIC, Inc – 8/16-Bit Microcontrollers

IA186EM/IA188EM
8/16-BIT Microcontrollers
Data Sheet
As of Production Version -03
a[19:0]
ad[15:0]
ale
den_n
wr_n
wlb_n
whb_n
rd_n
Bus Interface & Control
res_n
Peripheral Control and
Registers
lcs_n/once0_n
mcs3_n/rfsh_n
ucs_n/once1_n
pcs5_n/a1
pcs6_n/a2
mcs2_n - mcs0_n
pcs3_n - pcs0_n
Chip Selects and Control
pio[31:0]
Programmable I/O
Clock and
Power Management
clkouta
clkoutb
drq0
Direct Memory Access
drq1
Interrupt Controller
int4
int3/inta1_n/irq
int2/inta0_n
int1/select_n
int0
nmi
Timers
tmrin0
tmrout0
tmrin1
tmrout1
Asynchronous Serial
Port
txd0
rxd0
cts0_n/enrx0_n
rts0_n/rtr0_n
Synchronous Serial Port
sclk
sden0
sden1
sdata
Instruction Decode
and Execution
Figure 1. IA186/88EM Block Diagram
NOTE
See pin descriptions for pins that share other functions with PIO pins.
pwd, int5, int6, rts1_n/rtr1_n, and cts1_n/enrx1_n are multiplexed with int2_n/inta0_n, drq0_n,
drq0_n, pcs3_n, and pcs2_n respectively.
3737 Princeton NE, Ste 130 • Albuquerque, NM 87107 • Tel [phone] • Fax [phone] • www.Innovasic.com