Epson S1C17001 Technical Manual page 205

16 STOPWATCH TIMER (SWT)
16.7 Control Register Details
Address
0x5020 SWT_CTL
0x5021 SWT_BCNT
0x5022 SWT_IMSK
0x5023 SWT_IFLG
The stopwatch timer registers are described in detail below. These are 8-bit registers.
Note: When data is written to the registers, the "Reserved" bits must always be written as 0 and not 1.
196
Table 16.7.1 Stopwatch timer register list
Register name
Stopwatch Timer Control Register
Stopwatch Timer BCD Counter Register
Stopwatch Timer Interrupt Mask Register
Stopwatch Timer Interrupt Flag Register
Timer resetting and Run/Stop control
BCD counter data
Interrupt mask setting
Interrupt occurrence status display/resetting
EPSON
Function
S1C17001 TECHNICAL MANUAL