UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 289

• 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

Note To stabilize the internal circuit, the time from the rising of the ADCE bit to the rising of the ADCS bit must be
Cautions 1. A/D conversion must be stopped before rewriting bits FR0 to FR2, LV1, and LV0 to values
1
Note Ignore data of the first conversion because it is not guaranteed range.
μ
s or longer.
2. If data is written to ADM, a wait cycle is generated. Do not write data to ADM when the CPU is
ADCS
0
0
1
1
other than the identical data.
operating on the subsystem clock and the peripheral hardware clock is stopped. For details,
see CHAPTER 31 CAUTIONS FOR WAIT.
Comparator
ADCE
ADCS
ADCE
0
1
0
1
Figure 13-4. Timing Chart When Comparator Is Used
Stop status (DC power consumption path does not exist)
Conversion waiting mode (comparator: 1/2AV
consumes power)
Conversion mode (comparator operation stopped
Conversion mode (comparator: 1/2AV
Note
Table 13-1. Settings of ADCS and ADCE
Conversion
CHAPTER 13 A/D CONVERTER
operation
Comparator: 1/2AV
User’s Manual U17554EJ4V0UD
Conversion
A/D Conversion Operation
waiting
REF
operation
REF
Conversion
operation)
operation
REF
operation, only comparator
Note
)
Conversion
stopped
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