UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 139

• Manufacturer Part Number: UPD78F0890GK(A)-GAJ-AX
• Description: 8BIT MCU, 128K FLASH, 7K RAM, LQFP
• Manufacturer: NEC

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

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
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