TMP91xy20AFG Toshiba, TMP91xy20AFG Datasheet - Page 149

• 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

•
•
Integer divider (N divider)
N + (16 − K)/16 divider (Only UART mode)
frequency = φT2 (fc/16), the frequency divider N (BR0CR<BR0S3:0>) = 5, and
BR0CR<BR0ADDE> = 0, the baud rate in UART mode is as follows:
frequency = φT0, the frequency divider N (BR0CR<BR0S3:0>) = 7, K
(BR0ADD<BR0K3:0>) = 3, and BR0CR <BR0ADDE> = 1, the baud rate in UART
mode is as follows:
channels 0, 1). The method for calculating the baud rate is explained below:
•
•
Note: The N + (16 − K)/16 division function is disabled and setting
For example, when the source clock frequency (fc) = 12.288 MHz, the input clock
Accordingly, when the source clock frequency (fc) = 4.8 MHz, the input clock
Table 3.9.3 show examples of UART mode transfer rates.
Additionally, the external clock input is available in the serial clock. (Serial
Baud rate = external clock input frequency ÷ 16
It is necessary to satisfy (External clock input cycle) ≥ 4/fc
Baud rate = external clock input frequency
It is necessary to satisfy (External clock input cycle) ≥ 16/fc
In UART mode
In I/O interface mode
Baud rate =
Baud rate =
* Clock state
* Clock state
BR0ADD<BR0K3:0> is invalid.
= 4.8 × 10
= 12.288 × 10
fc/16
7 + (16 − 3)/16
5
91C820A-147
fc/4
6
÷ 16
÷ 4 ÷ (7 + 13/16) ÷ 16 = 9600 (bps)
6
÷ 16 ÷ 5 ÷ 16 = 9600 (bps)
÷ 16
System clock:
Clock gear:
Prescaler clock: System clock
System clock:
Clock gear:
Prescaler clock: System clock
High frequency (fc)
1 (fc)
High frequency (fc)
1 (fc)
TMP91C820A
2008-02-20