M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 140

• Manufacturer Part Number: M37702E6BFS
• Description: EPROM MCU/8BIT CMOS EMULATION CH
• Manufacturer: Renesas Electronics America

Specifications of M37702E6BFS

• Accessory Type: Emulator EPROM MCU
• For Use With/related Products: 7702
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Fig. 6.2.1 Block diagram of Timer B
TIMER B
6.1 Overview 6.2 Block description
Timer B consists of three counters (Timers B0 to B2) each equipped with a 16-bit reload function. Timers
B0 to B2 have identical functions and operate independently of each other.
7703 Group
Timers B1 and B2s’ function of the 7703 Group varies from the 7702 Group’s. Refer to “Chapter 20. 7703
GROUP.”
6.1 Overview
Timer Bi (i = 0 to 2) has three operating modes listed below.
6.2 Block description
Figure 6.2.1 shows the block diagram of Timer B. Explanation of registers relevant to timer B is described
below.
6–2
Timer mode
Event counter mode
Pulse period/pulse width measurement mode
The timer counts an internally generated count source.
The timer counts an external signal.
The timer measures an external signal’s pulse period or pulse width.
TBi
IN
f
f
f
512
f
Pulse period/Pulse width measurement mode
16
64
2
Count source select bits
Polarity switching
generating circuit
and edge pulse
Event counter
Timer mode
mode
7702/7703 Group User’s Manual
Counter reset circuit
(Low-order 8 bits)
Count start bit
Timer Bi reload register (16)
Data bus (even)
Timer Bi counter (16)
Data bus (odd)
(Valid in pulse period/pulse width
measurement mode)
(High-order 8 bits)
Timer Bi
overflow
flag
Timer Bi
interrupt
request bit