TMP91xy20AFG Toshiba, TMP91xy20AFG Datasheet - Page 296

• Manufacturer Part Number: TMP91xy20AFG
• Manufacturer: Toshiba

Specifications of TMP91xy20AFG

• Package: LQFP144
• Rom Types(m=mask,p=otp, F=flash,e=eeprom): M
• Rom Combinations: 8
• Ram Combinations: 8
• Architecture: 16-bit CISC
• Usb/spi Channels: -
• Uart/sio Channels: 1
• I2c/sio Bus Channels: 1
• (s)dram Controller: 1
• Adc 10-bit Channel: 8
• Da Converter: -
• Timer 8-bit Channel: 4
• Timer 16-bit Channel: 1
• Pwm 8-bit Channels: -
• Pwm 16-bit Channels: -
• Cs/wait Controller: 4
• Dual Clock: Y
• Number Of I/o Ports: 77
• Power Supply Voltage(v): 3.0 to 3.6

3.17.2
xxx: Don’t care
<SYSCK>
Selection
System
Clock
1 (fs)
0 (fc)
Operation
(1) Prescaler
(2) Up counter (UC0)
is divided clock (Divided by 4) from selected clock by the register SYSCR0<PRCK1:0>
of clock gear. This prescaler can be started or stopped using TB0RUN<TB0RUN>.
Counting starts when <TB0RUN> is set to 1; the prescaler is cleared to zero and stops
operation when <TB0RUN> is set to 0.
by TB0MOD<TB0CLK1:0>.
input clock. Counting or stopping and clearing of the counter is controlled by
TB0RUN<TB0RUN>.
value matches the value in the timer register TB0RG1H/L. Clearing can be enabled or
disabled using TB0MOD<TB0CLE>.
The 5-bit prescaler generates the source clock for TMRB0. The prescaler clock (φT0)
UC0 is a 16-bit binary counter which counts up pulses input from the clock specified
Any one of the prescaler internal clocks φT1, φTB0 and φT16 can be selected as the
When clearing is enabled, the up counter UC0 will be cleared to zero each time its
If clearing is disabled, the counter operates as a free running counter.
A timer overflow interrupt (INTTBOF0) is generated when UC0 overflow occurs.
Prescaler Clock
<PRCK1:0>
(fc/16 clock)
Selection
(f
FPH
00
10
)
Table 3.17.2 Prescaler Clock Resolution
<GEAR2:0>
Clock Gear
100 (fc/16)
001 (fc/2)
010 (fc/4)
011 (fc/8)
000 (fc)
Value
91C820A-294
XXX
XXX
2
2
2
2
2
2
2
3
3
4
5
6
7
7
/fs (244 µs)
/fc (0.2 µs)
/fc (0.4 µs)
/fc (0.9 µs)
/fc (1.8 µs)
/fc (3.6 µs)
/fc (3.6µs)
φT1
Prescaler Clock Resolution
2
2
2
2
2
2
2
5
5
6
7
8
9
9
/fs (977 µs)
/fc (0.9 µs)
/fc (1.8 µs)
/fc (3.6 µs)
/fc (7.1 µs)
/fc (14.2 µs)
/fc (14.2 µs)
at fc = 36 MHz, fs = 32.768 kHz
φT4
2
2
2
2
2
2
2
7
7
8
9
10
11
11
/fs (3.9 ms)
/fc (3.6 µs)
/fc (7.1 µs)
/fc (14.2 µs)
/fc (28.4 µs)
/fc (56.9 µs)
/fc (56.9 µs)
φT16
TMP91C820A
2008-02-20