S912XEQ384J3MALR Freescale Semiconductor, S912XEQ384J3MALR Datasheet - Page 684

Manufacturer Part Number

S912XEQ384J3MALR

S912XEQ Series 16 Bit 50 Mhz 384 KB Flash 24 KB Ram Microcontroller - LQFP-112

Manufacturer

Freescale Semiconductor

Chapter 18 Periodic Interrupt Timer (S12PIT24B4CV2)

Read: Anytime

Write: Anytime (write to clear)

Read: Anytime

Write: Anytime

Module Base + 0x0005

Module Base + 0x0006

Module Base + 0x0007

PIT Time-out Flag Bits for Timer Channel 3:0 — PTF is set when the corresponding 16-bit timer modulus

down-counter and the selected 8-bit micro timer modulus down-counter have counted to zero. The ﬂag can be

cleared by writing a one to the ﬂag bit. Writing a zero has no effect. If ﬂag clearing by writing a one and ﬂag setting

happen in the same bus clock cycle, the ﬂag remains set. The ﬂag bits are cleared if the PIT module is disabled

or if the corresponding timer channel is disabled.

0 Time-out of the corresponding PIT channel has not yet occurred.

1 Time-out of the corresponding PIT channel has occurred.

PIT Time-Out Flag Register (PITTF)

PIT Micro Timer Load Register 0 to 1 (PITMTLD0–1)

Figure 18-10. PIT Micro Timer Load Register 1 (PITMTLD1)

Figure 18-9. PIT Micro Timer Load Register 0 (PITMTLD0)

Figure 18-8. PIT Time-Out Flag Register (PITTF)

MC9S12XE-Family Reference Manual Rev. 1.24

Table 18-7. PITTF Field Descriptions

Freescale Semiconductor