upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 130

• Manufacturer Part Number: upd70f3422gj-gae-qs-ax
• Description: 32-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

Chapter 4
XT2
130
XT1
X2
X1
PCC.MFRC
MainOSC
~200 KHz
RingOSC
PCC.FRC
SubOSC
32 KHz
4 MHz
Figure 4-1
ROCLK
SSCG
4.1.1 Description
PCC.SOSCP
SOCLK
MOCLK
PLL
0
1
WCC.SOSCW
FCC.FOSOS
SBCLK
1
0
1
0
The clock generator is built up as illustrated in the following figure.
Block diagram of the Clock Generator
The left-hand side of the figure shows how the three oscillators can be
connected to the CPU, the two PLLs, and to certain peripheral modules.
Software-controlled selectors allow you to specify the signal paths.
The integrated PLL synthesizer multiplies the frequency of the main oscillator
by eight. This yields a frequency of 32 MHz. The CPU can use the PLL output
directly. The output frequency of the PLL divided by two can supply the
peripherals of the microcontroller and also the CPU.
The spread spectrum clock generator (SSCG) can generate a frequency-
modulated clock (modulation frequency and width can be chosen) that helps to
eliminate electromagnetic interference (EMI). The SSCG includes a
programmable frequency multiplier/divider that can multiply the frequency of
the main oscillator by up to 16.
The SSCG can supply the CPU system.
Preliminary User’s Manual U17566EE1V2UM00
WCC.WDTSEL0
SCFC0,SCFC1,SCFMC
CKC.SCEN
1
0
SSCG
PLL
x8
CKC.PLLEN
CKC.DEN
TCC.WTSEL0
TCC.WTSOS
PLLCLK
SSCCLK
n=1,2,4,8,16,32,64,128
PCLK1
SCPS.VBSPS[2:0]
1/2
n=1,2,3,4,6,8
1/n
TCC.WTPS[2:0]
1/n
WCC.WPS[2:0]
PSM.CMODE
1
0
1/n
PCC.CKS[1:0]
/2
FCC.FOCKS[1:0]
n=1,2,4,8,16,32,
SCC.SPSEL0
TCC.WTSEL1
64,128
1
0
0
1
CKC.PERIC
PCC.CLS
ICC.IICSEL1
0
1
0
1
FCC.FOEN
1
0
Standby
Standby
Standby
Standby
Standby
Standby
Standby
Standby
Standby
Standby
Standby
1/2
1/2
1
0
1
0
PRS0
PRS1
/
/2
.......
/
/2
/
.......
/
2
2
2
2
1
0
13
0
1
13
Clock Generator
PCLK0
PCLK1
PCLK2
PCLK3
.......
PCLK15
IICLK
SPCLK0
SPCLK1
SPCLK2
SPCLK3
.......
SPCLK15
FOUTCLK
LCDCLK
WTCLK
WDTCLK
WCTCLK
VBCLK
CPU System
AFCAN
UARTA
CSIB
TMZ
TMP
WCT
SG
IIC
Stepper C/D
TMG
CSIB
LCD I/F
LCD C/D
ADC
Port
LCD C/D
Watch Timer
Watchdog
Timer
Watch
Calibration
Timer