UPD78F0535GB(T)-UEU-A NEC, UPD78F0535GB(T)-UEU-A Datasheet - Page 147
UPD78F0535GB(T)-UEU-A
Manufacturer Part Number
UPD78F0535GB(T)-UEU-A
Description
8BIT MCU, 60K FLASH, 3KB RAM, LQFP
Manufacturer
NEC
Datasheet
1.UPD78F0535GBT-UEU-A.pdf
(773 pages)
Specifications of UPD78F0535GB(T)-UEU-A
Controller Family/series
UPD78
No. Of I/o's
55
Ram Memory Size
3KB
Cpu Speed
20MHz
No. Of Timers
8
No. Of Pwm
RoHS Compliant
Core Size
8bit
Program Memory Size
60KB
Oscillator Type
External, Internal
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(4) Internal oscillation mode register (RCM)
This register sets the operation mode of internal oscillator.
RCM can be set by a 1-bit or 8-bit memory manipulation instruction.
Reset signal generation sets this register to 80H
Address: FFA0H
Symbol
RCM
Notes 1. The value of this register is 00H immediately after a reset release but automatically
Caution When setting RSTOP to 1, be sure to confirm that the CPU operates with a clock
LSRSTOP
RSTOP
RSTS
RSTS
<7>
0
1
0
1
0
1
After reset: 80H
2. Bit 7 is read-only.
Figure 6-4. Format of Internal Oscillation Mode Register (RCM)
other than the internal high-speed oscillation clock. Specifically, set under either of
the following conditions.
• When MCS = 1 (when CPU operates with the high-speed system clock)
• When CLS = 1 (when CPU operates with the subsystem clock)
In addition, stop peripheral hardware that is operating on the internal high-speed
oscillation clock before setting RSTOP to 1.
changes to 80H after internal high-speed oscillator has been stabilized.
Waiting for accuracy stabilization of internal high-speed oscillator
Stability operating of internal high-speed oscillator
Internal low-speed oscillator oscillating
Internal low-speed oscillator stopped
Internal high-speed oscillator oscillating
Internal high-speed oscillator stopped
6
0
Note 1
CHAPTER 6 CLOCK GENERATOR
R/W
User’s Manual U17260EJ6V0UD
5
0
Note 2
Internal high-speed oscillator oscillating/stopped
Internal low-speed oscillator oscillating/stopped
Note 1
Status of internal high-speed oscillator
.
4
0
3
0
2
0
LSRSTOP
<1>
RSTOP
<0>
147
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