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EM78P152S Datasheet(PDF) 17 Page - List of Unclassifed Manufacturers

Part # EM78P152S
Description  8-Bit Microcontroller with OTP ROM
PDF  52 Pages
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Manufacturer  ETC1 [List of Unclassifed Manufacturers]
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EM78P152S Datasheet(HTML) 17 Page - List of Unclassifed Manufacturers

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EM78P152/3S
8-Bit Microcontroller with OTP ROM
5.4 I/O Ports
The I/O registers, both Port 5 and Port 6, are bidirectional tri-state I/O ports. Port 6 can
be pulled-high internally by software except P63. In addition, Port 6 can also have
open-drain output by software except P63. Input status changed interrupt (or wake-up)
function is available from Port 6. P50 ~ P52 and P60 ~ P62 pins can be pulled-down by
software. Each I/O pin can be defined as "input" or "output" pin by the I/O control
register (IOC5 ~ IOC6) except P63. The I/O registers and I/O control registers are both
readable and writable. The I/O interface circuits for Port 5 and Port 6 are shown in
Figure 5-5, Figure 5-6 and Figure 5-7 respectively.
Data Bus
TCC
Pin
CLK (Fosc/2 or Fosc/4)
0
1
M
U
X
M
U
X
1
0
SYNC
2 cycles
TCC (R1)
TE
TS
PAB
TCC Overflow Interrupt
PAB
PAB
0
1
M
U
X
WDT
WDTE
(in IOCE)
MUX
WDT Time Out
8-bit Counter
8-to-1 MUX
PSR0~PSR2
01
Figure 5-4 TCC and WDT Block Diagram
Product Specification (V1.8) 09.08.2009
• 13
(This specification is subject to change without further notice)



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