HD4074329S Renesas Electronics America, HD4074329S Datasheet - Page 42

• Manufacturer Part Number: HD4074329S
• Description: MCU 4-Bit HMCS400 CISC 20KB EPROM 3.3V/5V 64-Pin SDIP
• Manufacturer: Renesas Electronics America

Specifications of HD4074329S

• Package: 64SDIP
• Family Name: HMCS400
• Maximum Speed: 4.5 MHz
• Ram Size: 268 Byte
• Program Memory Size: 20 KB
• Operating Supply Voltage: 3.3|5 V
• Data Bus Width: 4 Bit
• Program Memory Type: EPROM
• Number Of Programmable I/os: 35
• On-chip Adc: 4-chx8-bit
• Operating Temperature: -20 to 75 °C
• Number Of Timers: 3

HD404328 Series
Table 21
38
External Clock
Operation
(OSC , OSC )
Ceramic
Oscillator
(OSC , OSC )
Crystal Oscillator
(OSC , OSC )
Crystal Oscillator
(X1, X2)
Notes:
1
1
1
1.
2.
3.
2
2
2
Circuit constants differ with different types of crystal and ceramic oscillators, and with the stray
capacitance of the board, so consult the manufacturer of the oscillator to determine the circuit
parameters.
The wiring between the OSC and OSC pins (X1 and X2 pins) and the other elements should
be as short as possible, and must not cross other wiring. Refer to figure 23.
If not using a 32.768-kHz crystal oscillator, fix the X1 pin to V
Oscillator Circuit Examples
OSC
Circuit Configuration
X1
GND
GND
GND
1
Ceramic
Crystal
Crystal
Open
External
oscillator
C
C
C
C
C
C
AT-cut parallel
resonance crystal
1
2
1
2
2
1
L
L
1
C
C
C
C
S
0
S
0
OSC
OSC
R
R
R
R
f
f
S
S
1
2
OSC
OSC
OSC
OSC
X1
2
X2
1
2
1
2
X2
OSC
2
Ceramic: CSA4.00MG
(Murata)
R = 1 M
C = C = 30 pF 20%
R : 1 M
C = C = 10 pF 10%
Crystal: Equivalent to circuit shown
at bottom left
C = 7 pF, max.
R = 100
f = 1.0 MHz to 4.5 MHz
Circuit Constants
C =C = 15 pF 5%
Crystal: 32.768 kHz, MX38T
(Nippon Denpa)
C = 1.5 pF, typ.
R = 14 k
1
0
S
f
1
f
0
S
1
CC
2
2
2
and leave the X2 pin open.
20%
, max.
, typ.
20%