UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 139
![8BIT MCU, 128K FLASH, 7K RAM, LQFP](/photos/19/1/190186/ge64lqfp05-40_sml.jpg)
UPD78F0890GK(A)-GAJ-AX
Manufacturer Part Number
UPD78F0890GK(A)-GAJ-AX
Description
8BIT MCU, 128K FLASH, 7K RAM, LQFP
Manufacturer
NEC
Datasheet
1.UPD78F0890GKA-GAJ-AX.pdf
(732 pages)
Specifications of UPD78F0890GK(A)-GAJ-AX
Controller Family/series
UPD78F
No. Of I/o's
55
Ram Memory Size
7KB
Cpu Speed
20MHz
No. Of Timers
10
No. Of Pwm
RoHS Compliant
Core Size
8bit
Program Memory Size
128KB
Oscillator Type
External, Internal
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Remark When using the subsystem clock, replace X1 and X2 with XT1 and XT2, respectively. Also, insert
Caution When X2 and XT1 are wired in parallel, the crosstalk noise of X2 may increase with XT1, resulting
(c) Wiring near high alternating current
resistors in series on the XT2 side.
in malfunctioning.
(e) Signals are fetched
V
V
SS
SS
Figure 6-11. Examples of Incorrect Resonator Connection (2/2)
X1
X1
X2
X2
CHAPTER 6 CLOCK GENERATOR
User’s Manual U17554EJ4V0UD
(d) Current flowing through ground line of oscillator
(potential at points A, B, and C fluctuates)
V
SS
A
High current
X1
B
Pmn
X2
C
V
DD
139
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