ia186em Innovasic Semiconductor Inc., ia186em Datasheet - Page 44

• Manufacturer Part Number: ia186em
• Description: 8-bit/16-bit Microcontrollers
• Manufacturer: Innovasic Semiconductor Inc.

IA186EM/IA188EM
8-Bit/16-Bit Microcontrollers
mcs2_n–mcs0_n
pcs3_n–pcs0_n
ucs_n/once1_n
mcs3_n/rfsh_n
lcs_n/once0_n
pcs6_n/a2
pcs5_n/a1
pio[31:0]
ad[15:0]
Note: See pin descriptions for pins that share other functions with PIO pins.
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.
a[19:0]
whb_n
den_n
wlb_n
res_n
wr_n
rd_n
ale
Programmable
Bus Interface
Chip Selects
Control and
and Control
and Control
Peripheral
Registers
®
I/O
Figure 7. Functional Block Diagram
Instruction Decode
UNCONTROLLED WHEN PRINTED OR COPIED
and Execution
Page 44 of 145
IA211050831-16
Clock and Power
Direct Memory
Asynchronous
Management
Synchronous
Serial Port
Serial Port
Controller
Interrupt
Access
Timers
(
)
December 24, 2008
http://www.Innovasic.com
int4
int3/inta1_n/irq
int2/inta0_n
int1/select_n
nmi
tmrin0
tmrout0
tmrout1
txd0
rxd0
rts0_n/rtr0_n
sclk
sden0
sdata
int0
tmrin1
cts0_n/enrx0_n
sden1
Customer Support:
drq0
drq1
clkouta
clkoutb
Data Sheet
1-888-824-4184