UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 111
UPD78F0413GA-GAM-AX
Manufacturer Part Number
UPD78F0413GA-GAM-AX
Description
8BIT UC, 32K FLASH, 1KB RAM, LCD
Manufacturer
NEC
Datasheet
1.UPD78F0413GA-GAM-AX.pdf
(562 pages)
Specifications of UPD78F0413GA-GAM-AX
Controller Family/series
UPD78F
No. Of I/o's
30
Ram Memory Size
1024Byte
Cpu Speed
10MHz
No. Of Timers
8
No. Of Pwm
RoHS Compliant
Core Size
8bit
Program Memory Size
32KB
Oscillator Type
External, Internal
Available stocks
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Company:
Part Number:
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ADI
Quantity:
882
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Part Number:
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(2) Processor clock control register (PCC)
This register is used to select the CPU clock, the division ratio, and operation mode for subsystem clock.
PCC is set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets PCC to 01H.
The fastest instruction can be executed in 2 clocks of the CPU clock in the 78K0/LC3. Therefore, the relationship
between the CPU clock (f
Address: FFFBH
Symbol
PCC
Caution
Note
Remarks 1. f
CSS
CLS
7
0
0
1
0
1
After reset: 01H
Bit 5 is read-only.
Figure 5-3. Format of Processor Clock Control Register (PCC)
2. f
Be sure to clear bits 3, 6, and 7 to “0”.
Main system clock
Subsystem clock
CPU
XP
SUB
PCC2
Other than above
) and the minimum instruction execution time is as shown in Table 5-2.
:
0
0
0
0
0
1
0
0
0
0
1
6
: Subsystem clock oscillation frequency
Main system clock oscillation frequency
R/W
CHAPTER 5 CLOCK GENERATOR
PCC1
CLS
Note
<5>
User’s Manual U18698EJ1V0UD
0
0
1
1
0
0
0
1
1
0
PCC0
CSS
<4>
0
1
0
1
0
0
1
0
1
0
CPU clock status
f
f
f
f
f
f
Setting prohibited
XP
XP
XP
XP
XP
SUB
/2 (default)
/2
/2
/2
/2
2
3
4
3
0
CPU clock (f
PCC2
2
CPU
) selection
PCC1
1
PCC0
0
111
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