197
Block Diagram: Figure 9.15 shows a block diagram of timer Y.
ø
TMCIY
Internal data bus
PSS
TCY
TMY
TLY
IRRTY
Legend:
TMY:
Timer mode register Y
TCY:
Timer counter Y
TLY:
Timer load register Y
IRRTY: Timer Y overflow interrupt request flag
PSS:
Prescaler S
Figure 9.15 Block Diagram of Timer Y
Pin Configuration: Table 9.14 shows the timer Y pin configuration.
Table 9.14
Timer Y Pin Configuration
Name
Abbrev.
I/O
Function
Timer Y event input
TMCIY
Input
Pin for event input to TCY
Register Configuration: Table 9.15 shows the timer Y register configuration.
Table 9.15
Timer Y Registers
Name
Abbrev.
R/W
Initial Value
Address
Timer mode register Y
TMY
R/W
H'78
H'FFCD
Timer counter YH
TCYH
R
H'00
H'FFCE
Timer counter YL
TCYL
R
H'00
H'FFCF
Timer load register YH
TLYH
W
H'00
H'FFCE
Timer load register YL
TLYL
W
H'00
H'FFCF