tmp89fm42a TOSHIBA Semiconductor CORPORATION, tmp89fm42a Datasheet - Page 3

• Manufacturer Part Number: tmp89fm42a
• Description: 8 Bit Microcontroller
• Manufacturer: TOSHIBA Semiconductor CORPORATION

(0x0FDC)
(0x0FDD)
SYSCR1
SYSCR2
Difference between 89FM42A and 89FM42, 89CM42
different from that of the products which have no internal oscillator (89FM42, 89CM42). For details, please refer to
"2. CPU" and "25. Electrical Characteristics".
In the product with an internal oscillator (89FM42A), a part of after reset value in registers and characteristics is
・ After reset value of System control register 1(SYSCR1)
・ After reset value of System control register 2(SYSCR2)
Read/Write
Read/Write
Read/Write
Read/Write
Bit Symbol
Bit Symbol
Bit Symbol
Bit Symbol
After reset
After reset
After reset
After reset
contents
contents
Selects the high-frequency clock (fh)
0: Selects the internal oscillator (f
1: Selects the external oscillator (f
Controls the internal high-frequency clock (f
0: Stop oscillation
1: Continue or start oscillation
OSCEN
STOP
R/W
R/W
7
0
7
1
Product with the internal oscillator
Product with the internal oscillator
RELM
R/W
XEN
R/W
6
0
6
0
(89FM42A)
(89FM42A)
OSCSEL
OSCEN
R/W
R/W
0
1
OUTEN
XTEN
R/W
OSC
R/W
C
5
0
5
0
)
)
OSC
DV9CK
SYSCK
)
R/W
R/W
4
0
4
0
OSCSEL
IDLE
R/W
R/W
3
0
3
0
Products without the internal oscillator
Products without the internal oscillator
TGHALT
(89FM42, 89CM42)
(89FM42, 89CM42)
R/W
R
2
−
0
2
0
R
R
−
1
−
−
−
0
−
−
R
R
1
−
0
1
−
0
TMP89FM42A
0
−
R
0
0
−
R
0