mb91307r Fujitsu Microelectronics, Inc., mb91307r Datasheet - Page 57

• Manufacturer Part Number: mb91307r
• Description: 32-bit Microcontroller Cmos Fr60 Mb91307 Series
• Manufacturer: Fujitsu Microelectronics, Inc.

5. U-TIMER (16 bit timer for UART baud rate generation)
(1) Overview
(2) Register List
(3) Block Diagram
The U-TIMER is a 16-bit timer used to generate the baud rate for the UART. Any desired baud rate can be set
using the combination of chip operating frequency and U-TIMER reload value.
The U-TIMER can also be used as an interval timer by generating an interrupt from a count underflow event.
This device features a 3-channel built-in U-TIMER. By connecting two U-TIMER channels used as interval timers
in a cascade connection, it is possible to count intervals up to a maximum of 2
The available case connections are channel 0 to channel 1, and channel 1 to channel 2.
(Peripheral clock)
15
φ
Under flow U-TIMER 1
15
15
Channel 0 only
MUX
UTIM
UTIMR
UTIMR (reload register)
8 7
UTIM (timer)
Clock
Load
UTIMC
Underflow
f.f.
MB91307 Series
32
× φ.
0
0
0
(R)
(W)
(R/W)
To UART
control
57