UPD78F9502MA-CAC-A NEC, UPD78F9502MA-CAC-A Datasheet - Page 62

• Manufacturer Part Number: UPD78F9502MA-CAC-A
• Description: 8BIT MCU, 4K FLASH, 128B RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F9502MA-CAC-A

• Controller Family/series: UPD78F
• No. Of I/o's: 8
• Ram Memory Size: 128Byte
• Cpu Speed: 10MHz
• No. Of Timers: 2
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 4KB
• Oscillator Type: External, Internal

62
EXCLK/P23
Note Select the high-speed internal oscillator or external clock input circuit as the system clock source by using
the option byte.
System clock
oscillator
External clock
High-speed
oscillation
STOP
internal
input
Note
f
X
Low-speed internal oscillation
mode register (LSRCM)
Figure 5-1. Block Diagram of Clock Generators
Option byte
1: Cannot be stopped.
0: Can be stopped.
Internal bus
f
2
X
Watchdog timer
Prescaler
CHAPTER 5 CLOCK GENERATORS
Preliminary User’s Manual U18681EJ1V0UD
2
f
X
2
Internal bus
PPCC1 PPCC0
Low-speed
oscillator
internal
LSRSTOP
Preprocessor clock
control register (PPCC)
f
XP
f
RL
Prescaler
f
2
XP
2
Clock to peripheral
hardware (f
PCC1
8-bit timer H1,
watchdog timer
Processor clock
control register (PCC)
XP
)
CPU clock
(f
CPU
)