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CHAPTER 1 OUTLINE (
μ
PD780078 SUBSERIES)
User
’
s Manual U14260EJ3V1UD
The following table outlines the timer/event counters (for details, refer to
CHAPTER 8 16-BIT TIMER/EVENT
COUNTERS 00, 01, CHAPTER 9 8-BIT TIMER/EVENT COUNTERS 50, 51, CHAPTER 10 WATCH TIMER,
and
CHAPTER 11 WATCHDOG TIMER)
.
16-Bit Timer/Event
Counters 00, 01
8-Bit Timer/Event
Counters 50, 51
Watch Timer
Watchdog Timer
TM00
TM01
TM50
TM51
Operation
Interval timer
1 channel 1 channel 1 channel 1 channel
1 channel
Note 1
1 channel
Note 2
mode
External event counter
1 channel 1 channel 1 channel 1 channel
–
–
Function
Timer output
1 output
1 output
1 output
1 output
–
–
PPG output
1 output
1 output
–
–
–
–
PWM output
–
–
1 output
1 output
–
–
Pulse width measurement
2 inputs
2 inputs
–
–
–
–
Square wave output
1 output
1 output
1 output
1 output
–
–
Interrupt source
2
2
1
1
1
1
Note 3
Notes 1.
The watch timer can be used both as a watch timer and an interval timer at the same time.
2.
The watchdog timer can be used as either a watchdog timer or interval timer. Select one of the functions.
3.
A non-maskable interrupt or maskable interrupt (internal) can be selected for the watchdog timer interrupt
(INTWDT).
1.9 Mask Options
The mask ROM versions (
μ
PD780076 and 780078) provide pull-up resistor mask options which allow users to
specify whether to connect a pull-up resistor to a specific port pin when the user places an order for device production.
Using the mask option when pull-up resistors are required reduces the number of components to add to the device,
resulting in board space saving.
The mask options provided in the
μ
PD780078 Subseries are shown in Table 1-2.
Table 1-2. Mask Options of Mask ROM Versions
Pin Name
Mask Option
P30 to P33
Pull-up resistor connection can be specified in 1-bit units.