M37702E6BFS Renesas Electronics America, M37702E6BFS Datasheet - Page 115

• 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. 5.4.5 Structure of up-down register
(1) Switching between up-count and down-count
b7
The up-down register (address 44
count from and to the down-count. This switching is performed by the up-down bit when the up-down
switching factor select bit (bit 4 at addresses 56
TAi
When switching the up-count/down-count, this switching is actually performed when the count source’s
next valid edge is input.
b6
Switching by up-down bit
Switching by TAi
The counter down-counts when the up-down bit is “0,” and up-counts when the up-down bit is “1.”
Figure 5.4.5 shows the structure of the up-down register.
The counter down-counts when the TAi
TAi
When using the TAi
direction registers’ bits which correspond to the TAi
OUT
b5
OUT
pin when the up-down switching factor select bit is “1.”
b4
pin’s input signal is at “H” level.
b3
b2
b1
b0
OUT
OUT
pin’s input signal
Up-down register (Address 44
Note: Use the LDM or STA instruction when writing to bits 5 to 7.
pin input signal to switch the up-count/down-count, set the port P5 and P6
Bit
1
3
0
2
7
4
5
6
Timer A2 two-phase pulse signal
processing select bit
Timer A3 two-phase pulse signal
processing select bit
Timer A4 two-phase pulse signal
processing select bit
Timer A0 up-down bit
Timer A1 up-down bit
Timer A2 up-down bit
Timer A3 up-down bit
Timer A4 up-down bit
7702/7703 Group User’s Manual
16
) or the input signal from the TAi
Bit name
OUT
pin’s input signal is at “L” level, and up-counts when the
16
16
)
(Note)
(Note)
(Note)
to 5A
OUT
0 : Down-count
1 : Up-count
This function is valid when the
contents of the up-down register are
selected as the up-down switching
factor.
1 : Enabled Two-phase pulse signal
0 : Disabled Two-phase pulse signal
When not using the two-phase pulse
signal processing function, make
sure to set the bit to “0.”
The value is “0” at reading.
16
) is “0,” and by the input signal from the
pin for the input mode.
processing function
processing function
Functions
OUT
5.4 Event counter mode
pin is used to switch the up-
TIMER A
At reset
0
0
0
0
0
0
0
0
RW
RW
RW
RW
RW
RW
WO
WO
WO
5–25