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CHAPTER 26
μ
PG TIMER (ONLY MB90485 SERIES)
26.1 Overview and Configuration of
μ
PG Timer
The
μ
PG timer is used to output pulses based on external input.
■
Block diagram of
μ
PG timer
Figure 26.1-1 shows a block diagram of the
μ
PG timer.
Figure 26.1-1 Block diagram of
μ
PG timer
■
Πιν ρελατεδ το μ
PG timer
The
μ
PG timer functions as the input port when the EXTC pin is used and the output port when
the MT00, MT01 pins are used. The EXTC pin functions as the general-purpose I/O port (P45/
EXTC) and input pin of
μ
PG timer. The MT00, MT01 pins function as the general-purpose I/O
port (P43/MT00, P44/MT01) and output pin of
μ
PG timer.
●
Setting when using as EXTC pin
When using as the EXTC pin by the
μ
PG timer, the P45/EXTC pin should be set to the input
port by the port direction register (DDR4 bit5
→
"0").
●
Setting when using as MT00/MT01 pins
When MT00/MT01 are used as output by the
μ
PG timer, be sure to set to the pulse output
enable (PE0/PE1 bit5, 6
→
"1") by the
μ
PG control/status register (PGCSR).
Control circuit
MT00
output latch
MT01
output latch
Output enable
MT00
MT01
EXTC
Summary of Contents for MB90480 Series
Page 2: ......
Page 4: ......
Page 10: ...vi ...
Page 128: ...106 CHAPTER 4 RESET ...
Page 174: ...152 CHAPTER 6 LOW POWER CONSUMPTION MODE ...
Page 198: ...176 CHAPTER 7 MODE SETTING ...
Page 220: ...198 CHAPTER 9 TIMEBASE TIMER ...
Page 238: ...216 CHAPTER 11 WATCH TIMER ...
Page 280: ...258 CHAPTER 12 16 BIT INPUT OUTPUT TIMER ...
Page 406: ...384 CHAPTER 17 8 10 BIT A D CONVERTER ...
Page 478: ...456 CHAPTER 20 CHIP SELECTION FACILITY ...
Page 494: ...472 CHAPTER 21 ADDRESS MATCH DETECTION FUNCTION ...
Page 498: ...476 CHAPTER 22 ROM MIRROR FUNCTION SELECTION MODULE ...
Page 526: ...504 CHAPTER 23 2M 3M BIT FLASH MEMORY ...
Page 536: ...514 CHAPTER 24 EXAMPLES OF MB90F481B MB90F482B MB90F488B MB90F489B SERIAL PROGRAMMING ...
Page 570: ...548 CHAPTER 25 PWC TIMER ONLY MB90485 SERIES ...
Page 688: ......