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TS80C32X2-LIC Folha de dados(PDF) 7 Page - ATMEL Corporation

Nome de Peças TS80C32X2-LIC
Descrição Electrónicos  8-bit Microcontroller 8 Kbytes ROM/OTP, ROMless
Download  55 Pages
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Fabricante Electrônico  ATMEL [ATMEL Corporation]
Página de início  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

TS80C32X2-LIC Folha de dados(HTML) 7 Page - ATMEL Corporation

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7
TS8xCx2X2
4184I–8051–02/08
13
15
9
I
INT1 (P3.3): External interrupt 1
14
16
10
I
T0 (P3.4): Timer 0 external input
15
17
11
I
T1 (P3.5): Timer 1 external input
16
18
12
O
WR (P3.6): External data memory write strobe
17
19
13
O
RD (P3.7): External data memory read strobe
Reset
9
10
4
I
Reset: A high on this pin for two machine cycles while the
oscillator is running, resets the device. An internal diffused
resistor to VSS permits a power-on reset using only an
external capacitor to VCC.
ALE/PROG
30
33
27
O (I) Address Latch Enable/Program Pulse: Output pulse for
latching the low byte of the address during an access to
external memory. In normal operation, ALE is emitted at a
constant rate of 1/6 (1/3 in X2 mode) the oscillator frequency,
and can be used for external timing or clocking. Note that one
ALE pulse is skipped during each access to external data
memory. This pin is also the program pulse input (PROG)
during EPROM programming. ALE can be disabled by setting
SFR’s AUXR.0 bit. With this bit set, ALE will be inactive
during internal fetches.
PSEN
29
32
26
O
Program Store ENable: The read strobe to external program
memory. When executing code from the external program
memory, PSEN is activated twice each machine cycle, except
that two PSEN activations are skipped during each access to
external data memory. PSEN is not activated during fetches
from internal program memory.
EA/VPP
31
35
29
I
External Access Enable/Programming Supply Voltage:
EA must be externally held low to enable the device to fetch
code from external program memory locations 0000H and
3FFFH (RB) or 7FFFH (RC), or FFFFH (RD). If EA is held
high, the device executes from internal program memory
unless the program counter contains an address greater than
3FFFH (RB) or 7FFFH (RC) EA must be held low for
ROMless devices. This pin also receives the 12.75V
programming supply voltage (VPP) during EPROM
programming. If security level 1 is programmed, EA will be
internally latched on Reset.
XTAL1
19
21
15
I
Crystal 1: Input to the inverting oscillator amplifier and input
to the internal clock generator circuits.
XTAL2
18
20
14
O
Crystal 2: Output from the inverting oscillator amplifier
Mnemonic
Pin Number
Type
Name and Function
DIL
LCC
VQFP
1.4


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