W78E051B40DL Nuvoton Technology Corporation of America, W78E051B40DL Datasheet - Page 21

• Manufacturer Part Number: W78E051B40DL
• Description: IC MCU 8-BIT 4K FLASH 40-DIP
• Manufacturer: Nuvoton Technology Corporation of America
• Series: W78r

Specifications of W78E051B40DL

• Core Processor: 8051
• Core Size: 8-Bit
• Speed: 40MHz
• Connectivity: EBI/EMI, UART/USART
• Peripherals: POR, WDT
• Number Of I /o: 32
• Program Memory Size: 4KB (4K x 8)
• Program Memory Type: FLASH
• Ram Size: 128 x 8
• Voltage - Supply (vcc/vdd): 4.5 V ~ 5.5 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 40-DIP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -

10. TYPICAL APPLICATION CIRCUITS
10.1 Expanded External Program Memory and Crystal
Note: C1, C2, R components refer to Figure A.
8.2 K
V
DD
10 u
C1
CRYSTAL
CRYSTAL
16 MHz
24 MHz
33 MHz
40 MHz
Above table shows the reference values for crystal applications (full gain).
C2
V
DD
R
12
13
14
15
18
19
31
9
1
2
3
4
5
6
7
8
W78E51B
XTAL2
XTAL1
RST
INT1
T0
T1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
INT0
P1.0
P1.1
EA
PSEN
P0.0
P0.1
P0.2
P0.3
P0.4
P0.5
P0.6
P0.7
P2.0
P2.1
P2.2
P2.3
P2.4
P2.5
P2.6
P2.7
RXD
TXD
ALE
RD
WR
38
37
39
36
35
21
22
23
24
25
26
27
28
34
33
32
17
16
29
30
11
10
30P
15P
10P
5P
Figure A
AD1
AD3
AD2
AD4
AD5
AD6
AD7
AD0
C1
A10
A11
A12
A9
A13
A14
A15
A8
- 21 -
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD0
GND
13
14
17
18
11
4
7
8
3
1
74373
D0
D1
D2
D3
D4
D5
D6
D7
G
OC
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Publication Release Date: Sep. 6, 2005
12
15
16
19
2
5
6
9
30P
15P
10P
5P
C2
A0
A1
A2
A3
A4
A5
A6
A7
GND
A10
A13
A11
A12
A14
A15
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
27
20
22
10
25
24
21
23
26
2
9
8
7
6
5
4
1
3
27512
OE
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
A12
A13
A14
A15
CE
W78E51B
O0
O1
O2
O3
O4
O5
O6
O7
6.8K
4.7K
R
11
12
13
15
16
17
18
19
-
-
Revision A7
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7