TMP91xy20AFG Toshiba, TMP91xy20AFG Datasheet - Page 148

• 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

(2) Baud rate generator
clocks that determine the transfer rate of the serial channels.
the 6-bit prescaler which is shared by the timers. One of these input clocks is selected
using the BR0CR<BR0CK1:0> field in the baud rate generator control register.
by 1 or N + (16 − K)/16 or 16 values, determining the transfer rate.
BR0ADD<BR0K3:0>.
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•
(1) When BR0CR<BR0ADDE> = 0
(2) When BR0CR<BR0ADDE> = 1
The baud rate generator is a circuit, which generates transmission and receiving
The input clock to the baud rate generator, φT0, φT2, φT8 or φT32, is generated by
The baud rate generator includes a frequency divider, which divides the frequency
The transfer rate is determined by the settings of BR0CR<BR0ADDE, BR0S3:0> and
In UART mode
In I/O interface mode
the selected prescaler clock by N, which is set in BR0CK<BR0S3:0>. (N = 1, 2, 3 ...
16)
divides the selected prescaler clock by N + (16 − K)/16 using the value of N set in
BR0CR<BR0S3:0> (N = 2, 3 ... 15) and the value of K set in BR0ADD<BR0K3:0>.
(K = 1, 2, 3 ... 15)
BR0CR<BR0ADDE> to 0 before dividing by N.
used is explained below.
•
•
Note: If N = 1 or N = 16, the N + (16 − K)/16 division function is disabled. Set
The settings BR0ADD<BR0K3:0> are ignored. The baud rate generator divides
The N + (16 − K)/16 division function is enabled. The baud rate generator
The N + (16 − K)/16 division function is not available in I/O interface mode. Set
The method for calculating the transfer rate when the baud rate generator is
In UART mode
In I/O interface mode
Baud rate =
Baud rate =
BR0CR<BR0ADDE> to 0.
Frequency divider for baud rate generator
Frequency divider for baud rate generator
Input clock of baud rate generator
91C820A-146
Input clock of baud rate generator
÷ 16
TMP91C820A
÷ 2
2008-02-20