mc9rs08ka2 Freescale Semiconductor, Inc, mc9rs08ka2 Datasheet - Page 89

• Manufacturer Part Number: mc9rs08ka2
• Description: Rs08 Microcontrollers 8-bit Microcontroller Family
• Manufacturer: Freescale Semiconductor, Inc

11.1.3
The block diagram for the modulo timer module is shown
11.2
The MTIM includes one external signal, TCLK, used to input an external clock when selected as the
MTIM clock source. The signal properties of TCLK are shown in
The TCLK input must be synchronized by the bus clock. Also, variations in duty cycle and clock jitter must
be accommodated. Therefore, the TCLK signal must be limited to one-fourth of the bus frequency.
The TCLK pin can be muxed with a general-purpose port pin. See the
the pin location and priority of this function.
11.3
Each MTIM includes four registers, which are summarized in
Refer to the direct-page register summary in the memory section of this data sheet for the absolute address
assignments for all MTIM registers. This section refers to registers and control bits only by their names.
Freescale Semiconductor
BUSCLK
XCLK
TCLK
•
•
•
•
MTIM
INTERRUPT
REQUEST
An 8-bit status and control register
An 8-bit clock configuration register
An 8-bit counter register
An 8-bit modulo register
External Signal Description
Register Definition
Block Diagram
SYNC
TOF
TOIE
Figure 11-2. Modulo Timer (MTIM) Block Diagram
Signal
TCLK
SOURCE
SELECT
CLOCK
CLKS
MC9RS08KA2 Series Data Sheet, Rev. 3
Table 11-1. Signal Properties
External clock source input into MTIM
AND SELECT
PRESCALE
DIVIDE BY
PS
Function
Figure
Table
11-2.
Table
11-2:
8-BIT COMPARATOR
Pins and Connections
8-BIT MODULO
11-1.
8-BIT COUNTER
Chapter 11 Modulo Timer (RS08MTIMV1)
(MTIMMOD)
(MTIMCNT)
I/O
I
chapter for
TRST
TSTP
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