Chapter 7 8-Bit Timer/Event Counters 50 And 51; Functions Of 8-Bit Timer/Event Counters 50 And 51 - NEC MuPD78F0132H User Manual

CHAPTER 7 8-BIT TIMER/EVENT COUNTERS 50 AND 51

7.1 Functions of 8-Bit Timer/Event Counters 50 and 51

8-bit timer/event counters 50 and 51 have the following functions.
• Interval timer
• External event counter
• Square-wave output
• PWM output
Figures 7-1 and 7-2 show the block diagrams of 8-bit timer/event counters 50 and 51.
TI50/TO50/
FLMD1/P17
f
X
f /2
X
2
f /2
X
8-bit timer
6
f /2
X
counter 50 (TM50)
8
f /2
X
13
f /2
X
3
TCL502 TCL501 TCL500
Timer clock selection
register 50 (TCL50)
Notes 1. Timer output F/F
2. PWM output F/F
180
Figure 7-1. Block Diagram of 8-Bit Timer/Event Counter 50
Internal bus
8-bit timer compare
register 50 (CR50)
Match
OVF
Clear
Selector
TCE50 TMC506 LVS50 LVR50 TMC501 TOE50
8-bit timer mode control
register 50 (TMC50)
Internal bus
User's Manual U16899EJ2V0UD
Selector INTTM50
Note 1
S
Q
INV
R
Note 2
S
Invert
level
R
To TMH0
To UART0
To UART6
TO50/TI50/
FLMD1/P17
Output latch
PM17
(P17)