HD64F3670 RENESAS [Renesas Technology Corp], HD64F3670 Datasheet - Page 317

• Manufacturer Part Number: HD64F3670
• Description: Hitachi Single-Chip Microcomputer
• Manufacturer: RENESAS [Renesas Technology Corp]

Item
11.4.1 Normal Operation
Figure 11.6 Toggle Output
Example (TOA = 0,
TOB = 1)
12.1 Features
12.2.1 Timer
Control/Status Register
WD (TCSRWD)
13.3.4 Transmit Data
Register (TDR)
13.3.7 Serial Status
Register (SSR)
15.1 When Using Internal
Power Supply Step-Down
Circuit
15.2 When Not Using
Internal Power Supply
Step-Down Circuit
Page
137
151
152
158
163
207
208
Revisions (See Manual for Details)
Description amended.
Eight clock sources ( /64, /128, /256, /512,
oscillator can be selected as the timer-counter clock.
When the internal oscillator is selected, it can operate
as the watchdog timer in any operating mode.
TCSRWD performs the TCSRWD and TCWD write
control. TCSRWD also controls the watchdog timer
operation and indicates the operating state. TCSRWD
must be rewritten by using the MOV instruction. The
bit manipulation instruction cannot be used to change
the setting value.
Initial value added.
TDR is initialized to H'FF.
Description amended.
Connect the external power supply to the V
connect a capacitance of approximately 0.1 µF
between V
Description amended.
When the internal power supply step-down circuit is
not used, connect the external power supply to the V
pin and V
/1024, /2048, /4096, and /8192) or the internal
Bit
2
Selectable from nine counter input clocks.
Bit Name
TEND
CC
CL
Bit
7
5
3
1
pin, as shown in figure 15.2.
and V
H'FFFF
GRA
GRB
H'0000
SS
, as shown in figure 15.1.
TCNT value
Initial Value
1
R/W
R/W
R/W
R/W
R/W
Rev. 2.0, 03/02, page 293 of 298
R/W
R
CC
pin, and
CL
Rev.
2.0
2.0
2.0
2.0
2.0
2.0
2.0