X5001 XICOR [Xicor Inc.], X5001 Datasheet - Page 7

• Manufacturer Part Number: X5001
• Description: CPU Supervisor
• Manufacturer: XICOR [Xicor Inc.]

X5001
Table 1. Instruction Set Definition
Notes: Instructions are shown with MSB in leftmost position. Instructions are transferred MSB first.
Figure 1. Read Watchdog Timer setting
Figure 2. Enable Watchdog Change/Disable Watchdog Change Sequence
Instruction Format
SCK
0000 0110
0000 0100
0000 0001
0000 0101
CS
SO
SI
0
1
INSTRUCTION
2
RWDT
SCK
SO
EWDC: Enable Watchdog Change Operation
DWDC: Disable Watchdog Change Operation
SWDT: Set Watchdog Timer control bits:
Instruction followed by contents of register: 000(WD
See Watchdog Timer Settings and Figure 3.
RWDT: Read Watchdog Timer control bits
3
CS
SI
4
5
HIGH IMPEDANCE
6
0
7
1
2
INSTRUCTION
Instruction Name and Operation
3
(1 BYTE)
7
4
W
D
1
5
W
D
0
6
7
1
) (WD
0
)000
...
...
...
7038 FRM T03