HD404358 Datasheet, PDF (32/102 Pages) Renesas Technology Corp – microcomputer has an A/D converter,

HD404358 Series
Internal Oscillator Circuit
A block diagram of the clock generation circuit is shown in figure 17. As shown in table 20, a ceramic
oscillator or crystal oscillator can be connected to OSC₁ and OSC₂. The system oscillator can also be
operated by an external clock. See figure 18 for the layout of crystal and ceramic oscillator.
OSC₂
OSC₁
System ^fOSC 1/4 ^fcyc Timing
oscillator
division
circuit
t_cyc
generator
circuit
ø_CPU
CPU with ROM,
RAM, registers,
flags, and I/O
ø_PER
Peripheral
function
interrupt
Figure 17 Clock Generation Circuit
TEST
RESET
OSC₁
OSC₂
GND
AV_SS
Figure 18 Typical Layout of Crystal and Ceramic Oscillator
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