UPD78F0890GK(A)-GAJ-AX NEC, UPD78F0890GK(A)-GAJ-AX Datasheet - Page 552

• 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

552
(b) Release by reset signal generation
When the reset signal is generated, STOP mode is released, and then, as in the case with a normal reset
operation, the program is executed after branching to the reset vector address.
Remark f
Internal high-speed
(X1 oscillation)
Status of CPU
oscillation clock
system clock
Reset signal
Status of CPU
High-speed
Reset signal
×: don’t care
Maskable interrupt
request
Reset signal input
X
Table 18-4. Operation in Response to Interrupt Request in STOP Mode
: X1 clock oscillation frequency
(2) When internal high-speed oscillation clock is used as CPU clock
Release Source
(1) When high-speed system clock is used as CPU clock
Normal operation
(internal high-speed
system clock)
Oscillates
Normal operation
(high-speed
oscillation clock)
Oscillates
Figure 18-7. STOP Mode Release by Reset
instruction
CHAPTER 18 STANDBY FUNCTION
STOP
instruction
STOP
MK××
User’s Manual U17554EJ4V0UD
Oscillation stopped
0
0
0
0
0
1
−
Oscillation stopped
STOP mode
STOP mode
PR××
0
0
1
1
1
×
−
IE
Oscillation
0
1
0
×
1
×
×
Starting X1 oscillation is
stopped
period
Reset
specified by software.
Oscillation
stopped
period
Reset
accuracy stabilization
Wait for oscillation
ISP
(11 to 45 s)
Oscillation
processing
×
×
1
0
1
×
×
(86 to 361 s)
stopped
Reset
(11 to 45 s)
processing
Reset
Next address
instruction execution
Interrupt servicing
execution
Next address
instruction execution
Interrupt servicing
execution
STOP mode held
Reset processing
Oscillation stabilization time
(internal high-speed
Normal operation
oscillation clock)
(internal high-speed
Operation
Normal operation
Oscillates
oscillation clock)
(2
Oscillates
11
/f
X
to 2
16
/f
X
)