tmp89fm42k TOSHIBA Semiconductor CORPORATION, tmp89fm42k Datasheet - Page 4

• Manufacturer Part Number: tmp89fm42k
• Description: 8 Bit Microcontroller Tlcs-870/c1 Series
• Manufacturer: TOSHIBA Semiconductor CORPORATION

RA000
(0x0FCD)
(0x0F34)
WUCCR
P0FC
Clock frequency
Note:
Parameter
・ After reset value of Warm-up counter control register (WUCCR)
・ After reset value of Port P0 function control register (P0FC)
・ Clock frequency in Electrical Characteristics
Function
To select the external high-frequency clock, the setting "1" to P0FC0 should be done before SYSCR2<XEN> is
set to "1". When P0FC0 is "0", the setting "1" to SYSCR2<XEN> generates a system clock (internal factor) reset.
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
Symbol
fcgck
0:
1:
Selects the warm-up counter source clock
00: Select the internal high-frequency clock (f
01: Select the external high-frequency clock (f
10: Select the external low-frequency clock (f
11: Reserved
0: Port function
1: XIN(I)
WUCRST
W
R
7
0
7
−
0
V
V
DD
DD
= 2.2 to 3.6 V
= 2.7 to 3.6 V
Product with the internal oscillator
Product with the internal oscillator
Conditions
WUCSEL(bit1,0)
−
R
−
R
6
0
6
0
(89FM42K)
(89FM42K)
P0FC0
R/W
R/W
00
0
R
R
5
−
0
5
−
0
Product with the internal oscillator
S
OSC
C
)
0.25 to 5.25
(89FM42K)
0.25 to 2.0
)
R
)
R
4
−
0
4
−
0
Selects the warm-up counter source clock
0: Select the external high-frequency clock (f
1: Select the external low-frequency clock (f
0: Port function
1: XIN(I)
R
3
1
3
−
0
WUCDIV
Products without the internal oscillator
Products without the internal oscillator
R/W
Port func-
Products without the internal oscillator
WUCSEL(bit1), −(bit0)
XTIN(I)
P0FC2
R/W
tion
R/W(bit1), R(bit0)
2
1
2
0
(89FM42L)
(89FM42L)
P0FC0
R/W
01
1
(89FM42L)
0.25 to 2.0
0.25 to 4.2
(V
R
SS
1
0
1
−
0
= 0V, Topr = −40 to 85°C)
WUCSEL
TMP89FM42K
R/W
S
C
)
Port func-
)
P0FC0
XIN(I)
R/W
tion
0
0
0
0
MHz
Unit