IA186ER/IA188ER
Data Sheet
16-Bit/8-Bit Microcontrollers with RAM
February 25, 2013
a[19:0]
clkouta
clkoutb
Clock and
Power
Management
ad[15:0]
ale
den_n
wr_n
wlb_n
whb_n
rd_n
Bus Interface
And Control
drq0
drq1
Direct Memory
Access
32 Kbytes
RAM
int4
int3/inta1_n/irq
int2/inta0_n
int1/select_n
int0
Interrupt
Controller
(
)
nmi
Peripheral Control
and Registers
tmrin0
tmrout0
tmrin1
Timers
lcs_n/once0_n
mcs3_n/rfsh_n
ucs_n/once1_n
pcs5_n/a1
tmrout1
Chip Selects and
Control
txd0
rxd0
Asynchronous
Serial Port
pcs6_n/a2
mcs2_n–mcs0_n
pcs3_n–pcs0_n
sclk
sden0
sden1
sdata
Synchronous
Serial Port
pio[31:0]
Programmable I/O
Instruction
Decode and
Execution
res_n
Figure 7. Functional Block Diagram
IA211110517-02
UNCONTROLLED WHEN PRINTED OR COPIED
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