hd64338023s Renesas Electronics Corporation., hd64338023s Datasheet - Page 290

• Manufacturer Part Number: hd64338023s
• Description: Renesas 8-bit Single-chip Microcomputer Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Section 9 Timers
Register Configuration
Table 9.2 shows the register configuration of timer A.
Table 9.2
Name
Timer mode register A
Timer counter A
Clock stop register 1
9.2.2
Timer Mode Register A (TMA)
TMA is an 8-bit read/write register for selecting the prescaler, and input clock.
Bits 7 to 5—Reserved
Bits 7 to 5 are reserved; only 0 can be written to these bits.
Bit 4—Reserved
Bit 4 is reserved; it is always read as 1, and cannot be modified.
Rev. 7.00 Mar 10, 2005 page 248 of 652
REJ09B0042-0700
Bit
Initial value
Read/Write
Register Descriptions
Timer A Registers


W
7


W
6


W
Abbr.
TMA
TCA
CKSTPR1
5


4
1
TMA3
R/W
R/W
R
R/W
R/W
3
0
TMA2
R/W
Initial Value
—
H'00
H'FF
2
0
TMA1
R/W
1
0
Address
H'FFB0
H'FFB1
H'FFFA
TMA0
R/W
0
0