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W78C33B 데이터시트 PDF : 부품 기능 및 핀배열

부품번호 W78C33B
기능 8-BIT MICROCONTROLLER
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W78C33B 데이터시트 및 W78C33B PDF

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W78C33B pdf, 반도체, 판매, 대치품
Preliminary W78C33B
ALE
Address Latch Enable Output, active high. ALE is used to enable the address latch that separates the
address from the data on Port 0. ALE runs at 1/6th of the oscillator frequency. A single ALE pulse is
skipped during external data memory accesses. ALE goes to a high state during reset with a weak
pull-up.
PSEN
Program Store Enable Output, active low. PSEN enables the external ROM onto the Port 0
address/data bus during fetch and MOVC operations. PSEN goes to a high state during reset with a
weak pull-up.
XTAL1
Crystal 1. This is the crystal oscillator input. This pin may be driven by an external clock.
XTAL2
Crystal 2. This is the crystal oscillator output. It is the inversion of XTAL1.
VSS, VCC
Power Supplies. These are the chip ground and positive supplies.
BLOCK DIAGRAM
P1.0
~
P1.7
P3.0
~
P3.7
P4.0
~
P4.3
Port
1
Port
3
Port
4
Port 1
Latch
Interrupt
Timer
2
Timer
0
Timer
1
UART
Port 3
Latch
Port 4
Latch
ACC
T1
B
T2
PSW
Stack
ALU Pointer
Instruction
Decoder
&
Sequencer
SFR RAM
Address
256 bytes
RAM & SFR
Bus & Clock
Controller
Port 0
Latch
DPTR
Temp Reg.
PC
Incrementor
Addr. Reg.
Port 2
Latch
Oscillator
Reset Block
Power control
P0.0
Port
0
~
P0.7
P2.0
Port
2
~
P2.7
XTAL1 XTAL2 ALE PSEN RST
VCC GND
-4-

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W78C33B 전자부품, 판매, 대치품
Preliminary W78C33B
DC CHARACTERISTICS
(VDD-VSS = 5V ±10%, TA = 25°C, Fosc = 20 MHz, unless otherwise specified.)
PARAMETER
Operating Voltage
Operating Current
SYM.
VDD
IDD
SPECIFICATION
MIN.
MAX.
4.5 5.5
- 20
Idle Current
IIDLE
-
6
Power Down Current
IPWDN
-
50
Input Current
P1, P2, P3, P4
Input Current
RST
Input Leakage Current
P0, EA
Logic 1 to 0 Transition
Current
P1, P2, P3, P4
Input Low Voltage
P0, P1, P2, P3, P4, EA
Input Low Voltage
RST
Input Low Voltage
XTAL1[*4]
Input High Voltage
P0, P1, P2, P3, P4, EA
Input High Voltage
RST
Input High Voltage
XTAL1 [*4]
Output Low Voltage
P1, P2, P3, P4
IIN1 -50
IIN2 -10
ILK -10
ITL [*4] -500
+10
+300
+10
-200
VIL1
VIL2
VIL3
VIH1
VIH2
VIH3
VOL1
0 0.8
0 0.8
0 0.8
2.4 VDD +0.2
3.5 VDD +0.2
3.5 VDD +0.2
- 0.45
UNIT
TEST CONDITIONS
V
mA No load
VDD = 5.5V
mA Idle mode
VDD = 5.5V
µA Power-down mode
VDD = 5.5V
µA VDD = 5.5V
VIN = 0V or VDD
µA VDD = 5.5V
0 < VIN < VDD
µA VDD = 5.5V
0V <VIN < VDD
µA VDD = 5.5V
VIN =2.0V
V VDD = 4.5V
V VDD = 4.5V
V VDD = 4.5V
V VDD = 5.5V
V VDD = 5.5V
V VDD = 5.5V
V VDD = 4.5V
IOL = +2 mA
Publication Release Date: June 1998
- 7 - Revision A1

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W78C33B

The functions of this components is a 8-BIT MICROCONTROLLER.

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