tmp19a44fda TOSHIBA Semiconductor CORPORATION, tmp19a44fda Datasheet - Page 33

• Manufacturer Part Number: tmp19a44fda
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

fperiph
Clock/Standby Control
XT1
XT2
fsys
5.2 Clock Gear
fs
X1
X2
OSCCR1
Low speed
<XTEN>
oscillator
1/2 1/4
OSCCR0<WPSEL>
OSCCR1
High speed
<XEN>
oscillator
1/2
•
•
•
fs
1/8 1/16
1/4
The high-speed clock is divided into 3/4, 1/2, 1/4 or 1/8.
The internal I/O prescaler clock φT0: fperiph/2, fperiph/4, fperiph/8, fperiph/16 and fperiph/32
（After reset: fperiph/32）
The PLLSEL register controls PLL on/off. PLL stops after reset.
fosc
f<PLLON>
1/32
OSCCR0<WUEF>
OSCCR0<WUPT1 : 0>
<PRC K2:0>
PLL
Fig. 5.3 Clock and Standby Related Block Diagram
PLLSEL <PLLSEL>
SYSCR1
Warm-up timer
fpll = fosc × 8
φT0
TMP19A44(rev1.3) 5-4
<SCOSEL1:0>
fc
1/2
SYSCR2
ADC conversion
1/4
cloc k
1/8
1/16
SYSCR0 <GEAR2 : 0>
After reset: 1/1
fgear
SYSCR1 <FPSEL>
IInput to peripheral I/O prescaler
TMRB/C, SIO, SBI
CKSEL <SYSCK>
CPU/G-BusI/O
Peripheral I/O
Peripheral I/O
SCOUT
CPU,R OM,RAM, DMAC,
INTC, HSIO, PHTCNT,K WUP
SBI
ADC, TMRB/C, SIO, SBI,
WDT, PORT, RTC
TMP19A44
fs
2010-04-01
fper iph
(To peripheral I/O)
fsys