Kbi Status And Control Register (Kbi_Sc) - NXP Semiconductors MC9S08SU16 Reference Manual

Memory Map and Registers

15.5.1 KBI Status and Control Register (KBI_SC)

KBI_SC contains the status flag and control bits, which are used to configure the KBI.
Address: 7Ch base + 0h offset = 7Ch
Bit 7
Read
Write
Reset 0
Field
7–4 This field is reserved.
Reserved This read-only field is reserved and always has the value 0.
3 KBI Interrupt Flag
KBF
KBF indicates when a KBI interrupt request is detected. Writes have no effect on KBF.
0 KBI interrupt request not detected.
1 KBI interrupt request detected.
2 KBI Acknowledge
KBACK
Writing a 1 to KBACK is part of the flag clearing mechanism.
1 KBI Interrupt Enable
KBIE
KBIE determines whether a KBI interrupt is enabled or not.
0 KBI interrupt not enabled.
1 KBI interrupt enabled.
0 KBI Detection Mode
KBMOD
KBMOD (along with the KBEDG bits) controls the detection mode of the KBI interrupt pins.
0 Keyboard detects edges only.
1 Keyboard detects both edges and levels.
238
6 5
0
0 0
KBI_SC field descriptions
MC9S08SU16 Reference Manual, Rev. 5, 4/2017
4 3
KBF
KBACK
0 0
Description
2 1
KBIE KBMOD
0 0
NXP Semiconductors
0
0