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EM78458AM Datasheet(PDF) 49 Page - ELAN Microelectronics Corp

Part # EM78458AM
Description  8-Bit Microcontroller with MASK ROM
PDF  62 Pages
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Manufacturer  EMC [ELAN Microelectronics Corp]
Direct Link  http://www.emc.com.tw
Logo EMC - ELAN Microelectronics Corp

EM78458AM Datasheet(HTML) 49 Page - ELAN Microelectronics Corp

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EM78458/459
8-Bit Microcontroller with MASK ROM
Product Specification (V1.4) 05.27.2005
• 43
(This specification is subject to change without further notice)
Address
Name
Reset Type
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
Bit Name
X
X
X
X
X
X
Bit1
Bit0
Power-on
0
0
0
0
0
0
0
0
/RESET and
WDT
0
0
0
0
0
0
0
0
0xC
RC
(TMR1H)
Wake-up from
Pin Changed
0
0
0
0
0
0
P
P
Bit Name
Bit7
Bit6
Bit5
Bit4
Bit3
Bit2
Bit1
Bit0
Power-on
0
0
0
0
0
0
0
0
/RESET and
WDT
0
0
0
0
0
0
0
0
0xD
RD
(TMR2L)
Wake-up from
Pin Changed
P
P
P
P
P
P
P
P
Bit Name
X
X
X
X
X
X
Bit1
Bit0
Power-on
0
0
0
0
0
0
0
0
/RESET and
WDT
0
0
0
0
0
0
0
0
0xE
RE
(TMR2H)
Wake-up from
Pin Changed
0
0
0
0
0
0
P
P
Bit Name
X
CMPIF
PWM2I
F
PWM1I
F
ADIF
EXIF
ICIF
TCIF
Power-on
0
0
0
0
0
0
0
0
/RESET and
WDT
0
0
0
0
0
0
0
0
0xF
RF
(ISR)
Wake-up from
Pin Changed
0
P
P
P
P
P
P
P
Bit Name
-
-
-
-
-
-
-
-
Power-on
U
U
U
U
U
U
U
U
/RESET and
WDT
P
P
P
P
P
P
P
P
0x10~0x3F
R10~R3F
Wake-up from
Pin Changed
P
P
P
P
P
P
P
P
X: not used.U: unknown or don’t care.P: previous value before reset.
t: check Table 5
4.12 Oscillator
4.12.1
Oscillator Modes
The EM78458 and EM78459 can be operated in four different oscillator modes, such
as High XTAL oscillator mode (HXT), Low XTAL oscillator mode (LXT), External RC
oscillator mode (ERC), and RC oscillator mode with Internal capacitor (IC). Users can
select one of them by programming the MASK Option. The up-limited operation
frequency of crystal/resonator on the different VDDs is listed in Table 11
Table 11 The Summary of Maximum Operating Speeds
Conditions
VDD
Fxt max.(MHz)
2.3
4
3.0
8
Two clocks
5.0
20



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