HMS87C1808B Datasheet, PDF (26/99 Pages) List of Unclassifed Manufacturers – 8-BIT SINGLE-CHIP MICROCONTROLLERS

HMS87C1X04B/08B/16B
F_{OSC 6}
(MHz)
5
Typical RC Oscillator
Frequency vs V_DD
No Cap
Ta = 25°C
4
R = 10K
3
R = 20K
2
R = 30K
1
R = 51K
0
V_DD
2.5 3.0 3.5 4.0 4.5 5.0 5.5 (V)
F_{OSC 6}
(MHz)
5
Typical RC Oscillator
Frequency vs V_DD
C_EXT = 10p
Ta = 25°C
4
3
R = 10K
2
R = 20K
R = 30K
1
R = 51K
0
V_DD
2.5 3.0 3.5 4.0 4.5 5.0 5.5 (V)
F_{OSC 6}
(MHz)
5
Typical RC Oscillator
Frequency vs V_DD
C_EXT = 20p
Ta = 25°C
4
3
R = 10K
2
R = 20K
1
R = 30K
0
R = 51K
V_DD
2.5 3.0 3.5 4.0 4.5 5.0 5.5 (V)
F_{OSC 6}
(MHz)
5
Typical RC Oscillator
Frequency vs V_DD
C_EXT = 30p
Ta = 25°C
4
3
R = 10K
2
R = 20K
1
R = 30K
0
R = 51K
V_DD
2.5 3.0 3.5 4.0 4.5 5.0 5.5 (V)
Note: The external RC oscillation frequencies shown in
above are provided for design guidance only and not tested
or guaranteed. The user needs to take into account that the
external RC oscillation frequencies generated by the same
circuit design may be not the same. Because there are vari-
ations in the resistance and capacitance due to the toler-
ance of external R and C components. The parasitic
capacitance difference due to the different wiring length
and layout may change the external RC oscillation frequen-
cies.
Note: The external RC oscillation frequencies of the
HMS87C1X04B/08B/16B may be different from that of the
HMS81C1X04B/08B/16B. The user should modify the val-
ue of R and C components to get the proper frequency in
exchanging OTP device to mask device.
22
SEP. 2004 Ver 1.03