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BIT MICROCONTROLLER. W78IE52 Datasheet

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BIT MICROCONTROLLER. W78IE52 Datasheet






W78IE52 MICROCONTROLLER. Datasheet pdf. Equivalent




W78IE52 MICROCONTROLLER. Datasheet pdf. Equivalent





Part

W78IE52

Description

8 BIT MICROCONTROLLER



Feature


www.DataSheet4U.com Preliminary W78IE52 8-BIT MICROCONTROLLER 1. GENERAL DESCR IPTION The W78IE52 is an 8-bit microcon troller which can accommodate a wider f requency range with low power consumpti on. The instruction set for the W78IE52 is fully compatible with the standard 8051. The W78IE52 contains an 8K bytes Flash EPROM; a 256 bytes RAM; four 8-bi t bi-directional a.
Manufacture

Winbond

Datasheet
Download W78IE52 Datasheet


Winbond W78IE52

W78IE52; nd bitaddressable I/O ports; an addition al 4-bit I/O port P4; three 16-bit time r/counters; a hardware watchdog timer a nd a serial port. These peripherals are supported by eight sources two-level i nterrupt capability. To facilitate prog ramming and verification, the Flash EPR OM inside the W78IE52 allows the progra m memory to be programmed and read elec tronically. Once t.


Winbond W78IE52

he code is confirmed, the user can prote ct the code for security. The W78IE52 m icrocontroller has two power reduction modes, idle mode and power-down mode, b oth of which are software selectable. T he idle mode turns off the processor cl ock but allows for continued peripheral operation. The power-down mode stops t he crystal oscillator for minimum power consumption. The .


Winbond W78IE52

external clock can be stopped at any tim e and in any state without affecting th e processor. 2. FEATURES • Fully sta tic design 8-bit CMOS microcontroller Wide supply voltage of 2.4V to 5.5V • Industrial temperature grade -40ºC − 85ºC • 256 bytes of on-chip scr atchpad RAM • 8 KB electrically erasa ble/programmable Flash EPROM • 64 KB program memory address space • 64 .

Part

W78IE52

Description

8 BIT MICROCONTROLLER



Feature


www.DataSheet4U.com Preliminary W78IE52 8-BIT MICROCONTROLLER 1. GENERAL DESCR IPTION The W78IE52 is an 8-bit microcon troller which can accommodate a wider f requency range with low power consumpti on. The instruction set for the W78IE52 is fully compatible with the standard 8051. The W78IE52 contains an 8K bytes Flash EPROM; a 256 bytes RAM; four 8-bi t bi-directional a.
Manufacture

Winbond

Datasheet
Download W78IE52 Datasheet




 W78IE52
www.DataSheet4U.com
Preliminary W78IE52
8-BIT MICROCONTROLLER
1. GENERAL DESCRIPTION
The W78IE52 is an 8-bit microcontroller which can accommodate a wider frequency range with low
power consumption. The instruction set for the W78IE52 is fully compatible with the standard 8051.
The W78IE52 contains an 8K bytes Flash EPROM; a 256 bytes RAM; four 8-bit bi-directional and bit-
addressable I/O ports; an additional 4-bit I/O port P4; three 16-bit timer/counters; a hardware
watchdog timer and a serial port. These peripherals are supported by eight sources two-level interrupt
capability. To facilitate programming and verification, the Flash EPROM inside the W78IE52 allows the
program memory to be programmed and read electronically. Once the code is confirmed, the user can
protect the code for security.
The W78IE52 microcontroller has two power reduction modes, idle mode and power-down mode, both
of which are software selectable. The idle mode turns off the processor clock but allows for continued
peripheral operation. The power-down mode stops the crystal oscillator for minimum power
consumption. The external clock can be stopped at any time and in any state without affecting the
processor.
2. FEATURES
Fully static design 8-bit CMOS microcontroller
Wide supply voltage of 2.4V to 5.5V
Industrial temperature grade -40ºC 85ºC
256 bytes of on-chip scratchpad RAM
8 KB electrically erasable/programmable Flash EPROM
64 KB program memory address space
64 KB data memory address space
Four 8-bit bi-directional ports
One extra 4-bit bit-addressable I/O port, additional INT2 / INT3
(available on 44-pin PLCC package)
Three 16-bit timer/counters
One full duplex serial port (UART)
Watchdog Timer
Eight sources, two-level interrupt capability
EMI reduction mode
Built-in power management
Code protection mechanism
Packages:
DIP 40: W78IE52
PLCC 44: W78IE52P
Comment [W1]:
Publication Release Date: April 20, 2005
- 1 - Revision A2




 W78IE52
Preliminary W78IE52
3. PIN CONFIGURATIONS
40-Pin DIP (W78IE52)
T2, P1.0
T2EX, P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
RST
RXD, P3.0
TXD, P3.1
INT0, P3.2
INT1, P3.3
T0, P3.4
T1, P3.5
WR, P3.6
RD, P3.7
XTAL2
XTAL1
VSS
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40 VDD
39 P0.0, AD0
38 P0.1, AD1
37 P0.2, AD2
36 P0.3, AD3
35 P0.4, AD4
34 P0.5, AD5
33 P0.6, AD6
32 P0.7, AD7
31 EA
30 ALE
29 PSEN
28 P2.7, A15
27 P2.6, A14
26 P2.5, A13
25 P2.4, A12
24 P2.3, A11
23 P2.2, A10
22 P2.1, A9
21 P2.0, A8
44-Pin PLCC (W78IE52P)
P1.5
P1.6
P1.7
RST
RXD, P3.0
INT2, P4.3
TXD, P3.1
INT0, P3.2
INT1, P3.3
T0, P3.4
T1, P3.5
/
TI
2 N AAAA
ET T DDDD
X2 3 0 1 2 3
,, ,
,, , ,
P P P PP P PP P P
1 1 1 11 4V 00 0 0
. . . . . . D. . . .
4 3 2 10 2D 01 2 3
76
5
4
3
2
1 44 43 42 41 40
39
8 38
9 37
10 36
11 35
12 34
13 33
14 32
15 31
16 30
17 29
18 19 20 21 22 23 24 25 26 27 28
PP XXVPPP P P P
33 TTS422 2 2 2
. . AAS. . . . . .
67 LL 001 2 3 4
, , 21
,, , , ,
/ / AA A A A
WR
89 1 1 1
RD
012
P0.4, AD4
P0.5, AD5
P0.6, AD6
P0.7, AD7
EA
P4.1
ALE
PSEN
P2.7, A15
P2.6, A14
P2.5, A13
-2-




 W78IE52
Preliminary W78IE52
4. PIN DESCRIPTION
SYMBOL
EA
DESCRIPTIONS
EXTERNAL ACCESS ENABLE: This pin forces the processor to execute out of
external ROM. It should be kept high to access internal ROM. The ROM address and
data will not be presented on the bus if EA pin is high and the program counter is
within on-chip ROM area.
PSEN
PROGRAM STORE ENABLE: PSEN enables the external ROM data onto the Port 0
address/ data bus during fetch and MOVC operations. When internal ROM access is
performed, no PSEN strobe signal outputs from this pin.
ALE ADDRESS LATCH ENABLE: ALE is used to enable the address latch that separates
the address from the data on Port 0.
RST
RESET: A high on this pin for two machine cycles while the oscillator is running resets
the device.
XTAL1
CRYSTAL1: This is the crystal oscillator input. This pin may be driven by an external
clock.
XTAL2
CRYSTAL2: This is the crystal oscillator output. It is the inversion of XTAL1.
VSS GROUND: Ground potential
VDD POWER SUPPLY: Supply voltage for operation.
P0.0 P0.7 PORT 0: Port 0 is a bi-directional I/O port which also provides a multiplexed low order
address/data bus during accesses to external memory. The Port 0 is also an open-drain
port and external pull-ups need to be connected while in programming.
P1.0 P1.7 PORT 1: Port 1 is a bi-directional I/O port with internal pull-ups. The bits have alternate
functions which are described below:
T2(P1.0): Timer/Counter 2 external count input
T2EX(P1.1): Timer/Counter 2 Reload/Capture control
P2.0 P2.7 PORT 2: Port 2 is a bi-directional I/O port with internal pull-ups. This port also provides
the upper address bits for accesses to external memory.
P3.0 P3.7 PORT 3: Port 3 is a bi-directional I/O port with internal pull-ups. All bits have alternate
functions, which are described below:
RXD(P3.0) : Serial Port receiver input
TXD(P3.1) : Serial Port transmitter output
INT0 (P3.2): External Interrupt 0
INT1(P3.3): External Interrupt 1
T0(P3.4) : Timer 0 External Input
T1(P3.5) : Timer 1 External Input
WR (P3.6) : External Data Memory Write Strobe
RD (P3.7) : External Data Memory Read Strobe
P4.0 P4.3 PORT 4: Another bit-addressable bidirectional I/O port P4. P4.3 and P4.2 are alternative
function pins. It can be used as general I/O port or external interrupt input sources
(INT2 /INT3 ).
Publication Release Date: April 20, 2005
- 3 - Revision A2






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