Z86L972 Datasheet, PDF (26/91 Pages) Zilog, Inc. – Low-Voltage Microcontrollers

Z86L972/Z86L973/Z86L974
Low-Voltage Microcontrollers
19
Table 5. Control and Status Register Reset Conditions
Register Function
Register Pointer
Stack Pointer
Program Control Flags
Low Battery Detect
Interrupt Mask
Interrupt Priority
Interrupt Request
Port Configuration (A)
Port Configuration (B)
Port 2 Data
Port 2 Mode
Port 4 Data
Port 4 Mode
Port 5 Data
Port 5 Mode
Port 6 Data
Port 6 Mode
T1 Timer Data
T1 Timer Mode
T1 Timer Prescale
T8/T16 Control (A)
T8/T16 Control (B)
T8 Timer Control
T8 High Capture
T8 Low Capture
T8 High Load
T8 Low Load
T16 Timer Control
T16 High Capture
T16 Low Capture
T16 High Load
T16 Low Load
Stop Mode Recovery
Port 2 SMR Source
Address
Grp/Bnk Register Symbol
F0h r13 (R253) RP
F0h r15 (R255) SP
F0h r12 (R252) Flags
0Dh r12
LB
F0h r11 (R251) IMR
F0h r9 (R249) IPR
F0h r10 (R250) IRQ
0Fh r0
P456CON
F0h r7 (R247) P3M
00h r2 (R2) P2
F0h r6 (R246) P2M
00h r4 (R4) P4
0Fh r2
P4M
00h r5 (R5) P5
0Fh r4
P5M
00h r6 (R6) P6
0Fh r6
P6M
F0h r2 (R242) T1
F0h r1 (R241) TMR
F0h r3 (R243) PRE1
0Dh r1
CTR1
0Dh r3
CTR3
0Dh r0
0Dh r11
0Dh r10
0Dh r5
0Dh r4
CTR0
HI8^†
LO8^†
TC8H^†
TC8L^†
0Dh r2
0Dh r9
0Dh r8
0Dh r7
0Dh r6
CTR2
HI16^†
LO16^†
TC16H^†
TC16L^†
0Fh r11
SMR
0Fh r1
P2SMR
Reset Value
R/W 7 6 5 4 3 2 1 0
R/W 0 0 0 0 0 0 0 0
R/W X X X X X X X X
R/W X X X X X X X X
R/W 1 1 1 1 1 X 0 0
R/W 0 0 0 0 0 0 0 0
W 00000000
R/W 0 0 0 0 0 0 0 0
R/W 0 0 0 0 0 1 1 1
W 11111111
R/W X X X X X X X X
W 11111111
R/W X X X X X X X X
R/W 1 1 1 1 1** 1 1 1
R/W X X X X X X X X
R/W 1 1 1 1 1 1 1 1
R/W X X X X X X X X
R/W 1 1 1 1 1 1 1 1
R/W 0 0 0 0 0 0 0 0
R/W 0 0 0 0 0 0 1 1
R/W 0 0 0 0 0 0 0 0
R/W 0 0 0* 0* 0 0 0 0
R/W 0 0 0* X X X X X
R/W 0 0 0* 0* 0* 0* 0* 0
RW 0 0 0 0 0 0 0 0
R/W 0 0 0 0 0 0 0 0
R/W 0 0 0 0 0 0 0 0
R/W 0 0 0 0 0 0 0 0
R/W 0 0 0 0 0 0 0 0
R/W 0 0 0 0 0 0 0 0
R/W 0 0 0 0 0 0 0 0
R/W 0 0 0 0 0 0 0 0
R/W 0 0 0 0 0 0 0 0
R/W 0 0 1 0 0 0 0 0
R/W 0 0 0 0 0 0 0 0
PS010504-1002
PRELIMINARY