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Número de pieza | ADAM24P16ST | |
Descripción | 4-BIT SINGLE-CHIP MICROCONTROLLERS | |
Fabricantes | ABOV | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de ADAM24P16ST (archivo pdf) en la parte inferior de esta página. Total 30 Páginas | ||
No Preview Available ! February 24, 2011 Ver 0.1
4-BIT SINGLE CHIP MICROCOMPUTERS
ADAM24P16S
USER`S MANUAL
• ADAM24P16S
• ADAM24P16ST
1 page ADAM24P16S
1. Overview
1.5. Pin Function
PIN
NAME
INPUT
OUTPUT
FUNCTION
@RESET
@STOP
K0 ~ K3
Input
-. 4-bit input Only port.
-. CMOS input with pull-up resistor.
-. Each pin has STOP mode release function.
(It is released by `L` input at STOP mode.)
Input
Input
(with Pull-up) (with Pull-up)
R2 ~ R3
-. 2-bit input Only port. (Input mode is set only
when each of them output `H`)
-. Each pin has STOP mode release function.
Input
Input
I/O -. Output mode is set when each of them
(with Pull-up) (with Pull-up)
output `L`.
-. When used as `output`, each pin can be set
and reset independently.
D0 ~ D3
D5, D7, D8
REMOUT
Output
-. N-ch open drain output.
-. Each pin can be set and reset independently.
Low
Low
Keep status
before STOP
Output -. High Current Pulse Output.
`Hi-Z` output `Hi-Z` output
VDD
Power -. Positive power supply.
--
GND
Power -. Ground
--
Page 4 of 32
5 Page ADAM24P16S
2. Architecture
2.3. Data Memory (RAM)
Up to 16 nibbles (16 words × 1pages × 4bits) is incorporated for storing data.
The whole data memory area is indirectly specified by a data pointer (X,Y). Page
number is specified by zero bit of X register, and words in the page by 4 bits in
Y-register. Data memory is composed in 16 nibbles/page. Figure 2-2 shows the
configuration.
D0~D9 R2~R3 REMOUT
Output port
Data memory page (0)
01
23
Page 0
4 A0~A3
Y-register (Y)
15
0
[X0] [X1]
X-register (X)
Fig 2-2 Composition of Data Memory
2.4. X-register (X)
X-register is consist of 2bit, X0 is not used, X1 is only used for selecting of D8 ~ D9
with value of Y-register
X1 = 0
X1 = 1
Y=0
Y=1
D0
D1
D8
D9
Table2-1 Mapping table between X and Y register
2.5. Y-register (Y)
Y-register has 4 bits. It operates as a data pointer or a general-purpose register.
Y-register specifies an address (A0~A3) in a page of data memory, as well as it
is used to specify an output port. Further it is used to specify a mode of carrier
signal outputted from the REMOUT port. It can also be treated as a general-
purpose register on a program.
2.6. Accumulator (ACC)
The 4-bit register for holding data and calculation results.
Page 10 of 32
11 Page |
Páginas | Total 30 Páginas | |
PDF Descargar | [ Datasheet ADAM24P16ST.PDF ] |
Número de pieza | Descripción | Fabricantes |
ADAM24P16S | 4-BIT SINGLE-CHIP MICROCONTROLLERS | ABOV |
ADAM24P16ST | 4-BIT SINGLE-CHIP MICROCONTROLLERS | ABOV |
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