HCS08 datasheet(184/316 Pages) NXP

184 / 316 page

Modulo Timer (S08MTIMV1)

MC9S08SG8 MCU Series Data Sheet, Rev. 8

184

Freescale Semiconductor

12.3.1

MTIM Status and Control Register (MTIMSC)

MTIM

SC contains the overflow status flag and control bits which are used to configure the interrupt enable,

reset the counter, and stop the counter.

432

TOF

TOIE

TSTP

TRST

Reset:

Figure 12-4. MTIM Status and Control Register

Table 12-2. MTIM Status and Control Register Field Descriptions

Field

Description

TOF

MTIM Overflow Flag — This read-only bit is set when the MTIM counter register overflows to $00 after reaching

the value in the MTIM modulo register. Clear TOF by reading the MTIMSC register while TOF is set, then writing

a 0 to TOF. TOF is also cleared when TRST is written to a 1 or when any value is written to the MTIMMOD register.

0 MTIM counter has not reached the overflow value in the MTIM modulo register.

1 MTIM counter has reached the overflow value in the MTIM modulo register.

TOIE

MTIM Overflow Interrupt Enable — This read/write bit enables MTIM overflow interrupts. If TOIE is set, then an

interrupt is generated when TOF = 1. Reset clears TOIE. Do not set TOIE if TOF = 1. Clear TOF first, then set TOIE.

0 TOF interrupts are disabled. Use software polling.

1 TOF interrupts are enabled.

TRST

MTIM Counter Reset — When a 1 is written to this write-only bit, the MTIM counter register resets to $00 and TOF

is cleared. Reading this bit always returns 0.

0 No effect. MTIM counter remains at current state.

1 MTIM counter is reset to $00.

TSTP

MTIM Counter Stop — When set, this read/write bit stops the MTIM counter at its current value. Counting resumes

from the current value when TSTP is cleared. Reset sets TSTP to prevent the MTIM from counting.

0 MTIM counter is active.

1 MTIM counter is stopped.

3:0

Unused register bits, always read 0.

HCS08 bảng dữ liệu(PDF) 184 Page - NXP Semiconductors

HCS08 bảng dữ liệu(HTML) 184 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 ...More

bảng dữ liệu tải về

Link URL