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CHAPTER 18 10-bit General-purpose Prescaler
18.1 Overview of 10-bit General-purpose Prescaler
The 10-bit general-purpose prescaler has built-in dedicated oscillation circuit and a load
function using the PPG output.
■
Feature of 10-bit General-purpose Prescaler
• 10-bit prescaler x 1ch (with square wave and pulse output)
• Dedicated internal oscillation circuit
• Includes load function driven by PPG output
■
Block Diagram of 10-bit General-purpose Prescaler
Figure 18.1-1 Block Diagram of 10-bit General-purpose Prescaler
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Register List of 10-bit General-purpose Prescaler
Figure 18.1-2 Register list of 10-bit General-purpose Prescaler
PCS0PCS1LDMOMINV
10bit Reload
Down Counter
Synchronous
Osci-
llation
Circuit
Reload Data Latch
Reload Data RegisterGPRD
2
1
/fch
2
3
/fch
2
6
/fch
PCK/OSCI
OSCO
PO Output
GPRD
ST
Load
GPRC
(from FRC)
Internal Bus
Write STB
PPG-015
D
Q
M
P
X
M
P
X
M
P
X
15 8 7 0
bit
Address:
000030
H
000032
H
GPRC
GPRDH GPRDL
Prescaler Control Register
Data Register