tmp19a43fzxbg TOSHIBA Semiconductor CORPORATION, tmp19a43fzxbg Datasheet - Page 27

• Manufacturer Part Number: tmp19a43fzxbg
• Description: 32bit Tx System Risc
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Note: This function does not guarantee a particular phase difference (AC timing) between the internal clock
Note 4: The following precautions must be observed when a low-speed oscillator is being used:
Note 3: Before starting the warm-up timer, first confirm that the PLL lock-up flag <LUPFG> is 0.
Note 1: Warm-up is unnecessary when the clock generator uses an oscillator so that its oscillation is stable.
Note 2: Since the warm-up timer is clocked by an oscillating clock, it will not be exact if the oscillation
Note: When returning from STOP/SLEEP mode to NORMAL or SLOW mode, set the warm-up time to 122
SCOUT Selection
and the system clock output from SCOUT.
<SCOSEL> = “0”
<SCOSEL> = “1”
μs or greater beforehand.
When a low-speed oscillator is connected to ports PD6 and PD7, the corresponding register must
be set as shown below in order to reduce the device's power consumption.
Example: If the device will return from SLEEP mode to SLOW mode, set SYSCR2<WUPT1:0> to 00,
frequency fluctuates. The warm-up time should, therefore, be considered to be an approximate
value.
Set PDCR<PD6C, PD7C> to 11 and PD<PD6, PD7> to 00.
Set PDCR<PD6C, PD7C> to 11 and PD<PD6, PD7> to 10.
(2) Outputting the system clock from a pin
Warm-Up Time Selection
(When using a resonator)
(When using an external clock)
SYSCR2<WUPT1:0>
P44/SCOUT pin can be set to function as the SCOUT pin by setting the registers which relate to port
4 as follows: P4CR<P44C> = 1 and P4FC<P44F> = 1. Use SYSCR3<SCOSEL> to select which
clock will be output from this pin.
as SCOUT.
(2
(2
(2
(2
that is, a warm-up time of 122 μs, before entering SLEEP mode.
2
8
14
16
The system clock fsys or fs can be output from the P44/SCOUT pin to an external device. The
Table 3.3.2 shows the pin state for each standby mode when the P44/SCOUT pin is set to function
/oscillation frequency)
/oscillation frequency)
/oscillation frequency)
/oscillation frequency)
Table 3.3.2 SCOUT Output State for Each Standby Mode
Mode
Outputs fs clock.
Outputs fsys clock.
NORMAL,
SLOW
Table 3.3.1 Warm-Up Time
TMP1942CY/CZ-26
High-Speed Clock
0.5 [ μ s]
32 [ μ s]
2.048 [ms]
8.192 [ms]
(fosc)
IDLE
Standby Mode
Low-Speed Clock (fs)
SLEEP
122 [ μ s]
7.8 [ms]
500 [ms]
2000 [ms]
TMP1942CY/CZ
Fixed to 0 or 1
STOP
The values calculated
are for when
fosc = 8 MHz
and fs = 32.768 kHz.